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DIY High Pressure Aeroponic System?

T

thefatman

At the end of the day, we choose systems (or versions of systems) that we like. There is no absolute, though I admit HPA/TAG + accumulator is pretty close to ideal, but, you need to be able to handle hardware failure on the fly or you could lose an entire grow. I don't like the odds.

At this level, you will be growing some outrageous weed. no matter how advanced you want to take it. Personally, the easier/simpler, the better
. hth

We can just agree to disagree.

I have already read your TAG thread. I disagree with your arguments/opinions such as the easier/simplier, the better and more. You apparently have misunderstanding or have neglected of some of that I have written, but that is OK as like I said some are always willing to settle for what they call good enough. Some like me are damned with being engineers or other types of perfectionists and mechanical systems designers. We often do not just settle for less then better.

What I suggest is better for my needs and is well within reason as well as it incorporates safety back ups protecting against mechanical failures and power outages which with your easier/simplier system a pump failure or power outage would quickly lead to a total a loss as would the accumulator solenoids system. I really do not suggest anyone build a HP aero system but instead I recommend an air atomized system especially if it is a commercial grow or perpetual grow system. However we all make our choices. Many make their choices and after many half measure systems are built and rebuilt and rebuilt they finally make their changes to different systems without all the complications and short comings.

I am just offering an example of a better system in my opinion as well as stating the deficiencies of most HP aero systems both with and without accumulator tanks and solenoids.

In my opinion the system you grow is what some Pod HP aero growers call a tag system rather than a true HP aero grow system. Tag is far from ideal as described in your forum. It is however likely good enough for the majority. You explained in your thread the problems and errors in your system as you grew with it and steadily got closer to a system with short spray times, such as 0.5 seconds, as you progressed in knowledge in using such a system. You described how you could not get a good hair root ball with the longer cycles you were using. Also you fail to mention here that a system using a two second spray cycle wastes about four or five times as much nutrient as one using a 0.5 second spray cycle and grows a lesser quality root system especially if using no accumulator tank. I am not aware that you ever added a fogger to your system and a HP aero mister system without a fogger is not a mister fogger system. A mister nozzle does not put out droplets in the fogger range but in the 30 to 80 micron size with the greater percentage of the droplets at or very near the 50 micron size.

Is your system any less prone to mechanical failures then a system with a solenoid and accumulator. I would say no. Is either your system or a HP system with an accumulator tank and solenoid less prone to mechanical break down then a good air atomized system. No. In the long run I doubt with the pump replacements that will be needed much more often with your system then the pumps in a system with an accumulator tank and solenoid that your system is not cheaper to operate. Neither will it compare to the lower operating cost of the air atomized system and the lesser mechanical failures as well as the easy expansion capabilities and back up system that will erase any cost disadvantages of higher component cost of the air atomized system.

As I said before we can just agree to disagree. After all the vast majority of those who try a HP aero or air atomized aero system whether with an accumulator and solenoids or not usually abandons the project before ever getting their systems dialed in. The learning curve involved is not easy to accept for most growers. Medium pressure aero systems are much easier to build and use as well as usually being much cheaper to build. They are however more expensive to operate and use much more nutrients per grow as well as taking a longer period of time per grow. More prone to root rot also. Less then low pressure though.
 

Me2

Member
Compressed air is very expensive to produce compared to putting water under pressure, a big clue to how inefficient it is, is the amount of heat it produces.

You say that your nozzles deliver 50 micron droplets with 5-15psi air pressure, i emailed Delavan`s technical dept and they say you need a minimum 30 psi air pressure to acheive 50 micron droplets with SN series nozzles with either gravity or siphon feed. They also said the higher flow rate models would require higher air pressures to produce the same droplet size as flowrate, air pressure and droplet sizes are interrelated.

Petflora`s roots may not be as good as yours but to his credit he posts pics, good or bad, that can be judged on their own merits.
 

PetFlora

Well-known member
ICMag Donor
Veteran
Thanks Me2. Long time no speak. I made some big leaps during my last grow, and finally had fluffy roots (cotton candyish) with tons of hairs, but before I realized it, in early May we were having a 5 day sweltering heat wave that drove my pod temps over 90 degrees.

I tried a number of things to no avail; the heat was relentless. By the time I figured it out (added a vent and blew a fan across it) temps immediately dropped to low 80s, but the damage was done to the root hairs. Yeah, I could probably have revived them, but all four plants soon became males, so I shut it down. But I am ready to rock next time.
 

PetFlora

Well-known member
ICMag Donor
Veteran
We can just agree to disagree. We shall, and without being upset by it, as there is room for ideal and lessor variations for those who want to keep it simple.

I have already read your TAG thread. I disagree with your arguments/opinions such as the easier/simplier, the better and more. You apparently have misunderstanding or have neglected of some of that I have written, but that is OK as like I said some are always willing to settle for what they call good enough. Some like me are damned with being engineers or other types of perfectionists and mechanical systems designers. We often do not just settle for less then better. I know, but you inspire me to think how can I simplify it without giving up too much yield. Importantly, I think I finally crossed the Rubicon and will have much better yields in the future.

What I suggest is better for my needs and is well within reason as well as it incorporates safety back ups protecting against mechanical failures and power outages which with your easier/simplier system a pump failure or power outage would quickly lead to a total a loss as would the accumulator solenoids system. I really do not suggest anyone build a HP aero system but instead I recommend an air atomized system especially if it is a commercial grow or perpetual grow system. However we all make our choices. Many make their choices and after many half measure systems are built and rebuilt and rebuilt they finally make their changes to different systems without all the complications and short comings.

I am just offering an example of a better system in my opinion as well as stating the deficiencies of most HP aero systems both with and without accumulator tanks and solenoids. Understood. But my method is simpler than using an accum, and I got much better results on my last grow, and feel very confident I can way outdo it from now on.

In my opinion the system you grow is what some Pod HP aero growers call a tag system rather than a true HP aero grow system. Tag is far from ideal as described in your forum. It is however likely good enough for the majority. You explained in your thread the problems and errors in your system as you grew with it and steadily got closer to a system with short spray times, such as 0.5 seconds, as you progressed in knowledge in using such a system. You described how you could not get a good hair root ball with the longer cycles you were using. OK, but that all changed once I got a MDT-1 timer. Also you fail to mention here that a system using a two second spray cycle wastes about four or five times as much nutrient as one using a 0.5 second spray cycle and grows a lesser quality root system especially if using no accumulator tank. True, but I figured people could figure that part out. I am not aware that you ever added a fogger to your system and a HP aero mister system without a fogger is not a mister fogger system. A mister nozzle does not put out droplets in the fogger range but in the 30 to 80 micron size with the greater percentage of the droplets at or very near the 50 micron size. I tried a fog system prior to going TAG, and my TAG system uses a high pressure pump. The debate is mostly over what the few extra miliseconds my system needs to reach >50 psi when each wet cycle comes on. AND, how that translates into a percentage of bigger yield. Until somebody does a side-by-side, we can only debate how much greater yield is and whereto the increase offsets the added complexity, expense, and variables to justify adding an accum, solenoids, pressure gauges... IMHO, my system is close enough for me.

Is your system any less prone to mechanical failures then a system with a solenoid and accumulator. I would say no. Huh? The only thing I need to monitor is my pump, and I have a backup. Is either your system or a HP system with an accumulator tank and solenoid less prone to mechanical break down then a good air atomized system. Now we're off topic. I have no experience with air atomization. No. In the long run I doubt with the pump replacements that will be needed much more often with your system then the pumps in a system with an accumulator tank and solenoid that your system is not cheaper to operate. Newer pump technology has changed the game from the original TAGGers, and some people haven't kept up. My Aquatec 8800 is humming right along after 3 full grows where the w/d cycles are ~ 2 seconds every 2-3 minutes Neither will it compare to the lower operating cost of the air atomized system and the lesser mechanical failures as well as the easy expansion capabilities and back up system that will erase any cost disadvantages of higher component cost of the air atomized system. From what I've seen, belonging to 4 different mj e-mags, most people are personal use growers or are licensed to grow ~ 6 plants.

As I said before we can just agree to disagree. I still agree! After all the vast majority of those who try a HP aero or air atomized aero system whether with an accumulator and solenoids or not usually abandons the project before ever getting their systems dialed in. The learning curve involved is not easy to accept for most growers. That's why I did a journal and several grow threads, here and elsewhere. NO doubt I need to do a new journal showing how straight forward and simple it can be and still get awesome yields. Medium pressure aero systems are much easier to build and use as well as usually being much cheaper to build. They are however more expensive to operate and use much more nutrients per grow as well as taking a longer period of time per grow. More prone to root rot also. Less then low pressure though.
I started hydro with low pressure RDWC rig. Wasn't happy, tried fogging- wasn't happy, then found Pod Racer's TAG thread which was at time 4-5 years old. I continue to do my best to distill and simplify my knowledge, so that others msy not be frightened off. FYI, True HPA is gaining traction on other sites. hth

When will we see some visual evidence of your new rig?
 
T

thefatman

You have not verbalized your opinion/experience in regard to the differing pump life spans when using a pump with no accumulator versus a pump with an accumulator. You have not verbalized an opinion about the fact/aspect that an accumulator tank solenoid system has the advantage of being able to still provide needed water for hours (5 to 6 or even more depending on tank size) if the power is out or the pump fails. All that would be required is a small APC battery back up system like those used to run a computer during power outages. Aeroponic plants die quickly without water.

From what I've seen, belonging to 4 different mj e-mags, most people are personal use growers or are licensed to grow ~ 6 plants.

Whether small growers make up the majority of the readership or authors in mj growing forums is not really an issue nor is it a known fact/statistic. I am quite sure that most large growers of much intelligence using or reading from mj growing forums do not let it be known they are large growers. The fact that a few photos of some large growing operations are posted on this and a few other forums is in my opinion a huge mistake made by the photo posters.

In regard to Pod racers thread yes it is quite old and contains much less useful information then the later thread by treefarmer where he openly insulted TAG growing systems.

What are the names of some of these sites where other than just posts of the curious there are indications that many growers are actually trying out HP systems yet alone using them after one or two grows.

I have pointed out repeatedly and consistently in several mj growing forums since my last stint in prison that I will never again post photos attributed to mj growing on the web. I no longer even take photos of any aspect of growing operations or ofmj itself. The fact that the appellate court hearing my appeals ruled while photos posted on online mj growing forums or those distributed amongst friends can not be used as evidence of my actually operating a mj grow they can be used as evidence that I showed the propensity to commit the crime. Therefore while ruling that the court errored in allowing the photos as evidence of the crime of manufacturing mj that the photos were not prejudicial as they clearly displayed the propensity to commit the crime. i.e. my conviction and 5 year sentence was upheld.

Sadly a mj forum site administrator willingly supplied digital images attributed to me to state police at the suggestion of the DEA without the site owner even being served a warrant or a subpoena. The fact that those same images were also stored on my home computer and some memory sticks was an obvious clincher.

Does making written posts to a mj forum also show propensity to commit the crime of growing mj. Yes just as repeatedly accessing a mj site shows propensity to commit the crime. The judge writing the courts opinion of the however stated posted photos are the most obvious examples other than prior convictions of showing a propensity to commit the crime.

Several states have in the last year passed new child pornography laws that found individuals guilty of a sex crime by accessing a site with child pornography more than once and staying on that site more than the time a prosecuting attorney believes it should take to see it contained child pornography and no appellate court has yet agreed to review the lower court convictions on those cases. The continued US federal governments allowance of the access in the US of online mj growing forums just might not continue a lot longer. Oh well I am babbling now and writing about this matter in the wrong forum section. Makes me really think more deeply about the George Orwell book titled 1984.

Well I am for now through with all of the above topics to include the differing aspects of aero growing systems.
 
T

thefatman

Compressed air is very expensive to produce compared to putting water under pressure, a big clue to how inefficient it is, is the amount of heat it produces.

You say that your nozzles deliver 50 micron droplets with 5-15psi air pressure, i emailed Delavan`s technical dept and they say you need a minimum 30 psi air pressure to acheive 50 micron droplets with SN series nozzles with either gravity or siphon feed. They also said the higher flow rate models would require higher air pressures to produce the same droplet size as flowrate, air pressure and droplet sizes are interrelated.

Petflora`s roots may not be as good as yours but to his credit he posts pics, good or bad, that can be judged on their own merits.

Strange as I have have exchanged many emails with Delevan's technical department and they never gave me such information. They actually stated Delevan's pride in having nozzles that spray very fine droplets at low pressures. Their advertisements even contain that claim. Even the sprayed cone angles do not back up any claim that pressure of at least 30 psi must be used to obtain 50 micron droplets. The higher pressure might be needed when using Delevan's SNA nozzles as siphoning nozzles Though adds and the pdf documents to not support that being the case. The pdf documents, email correspondence I have had with Delevan's technical department in the past and my own usage of the SNA siphon nozzless in a gravity mode does not support any claim that 30 psi pressures are needed to obtain 50 micron droplet sizes.

Yes larger nozzles require higher pressures but Delevan makes many nozzle flow capacities that work well at lower pressures when gravity fed or fed at low siphon heads. But at pressures of 15 psi and less you can easily get 50 micron droplets at flow rates of over a gallon per hour even if spraying waste oil. Doing so with water is no problem. To do so consistently however you do need to maintain consistent gravity feed heights. I simply accomplish this with auto top off systems.

Delevan's advertising claims:

Spray Characteristics

  • Produces a solid cone spray pattern with extremely fine particle size at low air pressures and low CFM.
  • Flow rates, spray angles and droplet sizes can be modified, with limitations, by variations in air, lift, etc. relatively large passages.
  • Clog free operation of low volume due to relatively large passages.
  • Excellent for waste oil applications
Perhaps Delevan's tech department thought you wanted 50 micron droplets with waste oil. However this does not even seem to be the case according to their pdf they use to post on the web at their site.

I have much a better pdf from Delevan then they now provide on line that show volumes and spray cone angles at different gravity feed heights and air volume as well as air pressures. It seems Delevan no longer post this pdf for the public. These pdf's show that the increasing of the gravity feed height (gravity head) easily allows for the same spray pattern and therefore droplet sizes as is obtainable at lower head and higher air pressures. Performance is easily adjustable with such nozzles through either raising the gravity feed height, increasing the air pressure or combinations of both. Those differences are even more pronounced with low viscosity fluids such as low EC nutrient/water solutions. The better pdf's show data using air pressures from around 3 psi up to around 42 psi. I can send an email attachment of this pdf to anyone who wants to supply an email address.

Air atomization with the DNA nozzles is more energy efficient than HP spraying nozzles when used in a gravity manner and at low siphon heights even when a droplet size of 50 micros is needed.

As for the heat created by compression that is true but better compressors cool the air that is compressed. Pumping water at high pressures also creates a great deal of heat so that argument is moot.

As for posting photos on line. Not gonna happen dude. Photos put me in prison once already.
 

eburna

New member
thefatman: Sad to hear about the photos being used against you. I think an air compressed system is a bit over my head, but I can see its advantages.

Has anyone tried using an wet fog?
 

Me2

Member
Delavan`s tech dept knew exactly what i wanted to know because i asked specific questions and outlined the parameters such as liquid with specific gravity of 1 (aka water not oil) and a droplet range of 30-80 microns.
I was passed from one guy to another but eventually got the information. You imply Delavan doesnt provide technical support for their products, ime and from the attached data from delavan tech thats bs, much like your comparison of heat generated by a compressor vs water pump. If you fill a 5 gallon tank with compressed air to 100psi you wont be able to touch the compressor head. A water pump filling the same tank to 100psi would be barely warm.
The inaccuracies in your information and lack of pics to support your claims leads me to believe your system is purely theoretical.

The attached pic shows the droplet size range for one particular SN Delavan nozzle in the 30610/30609 series. The tech dept use dedicated software to calculate which nozzle will meet the customers requirements, in this case the main parameters were droplet size range and flow rate. I have purposefully omitted the gravity height and nozzle model number. The data shown relates to 41.16psi air pressure (2.8bar) gravity feed with liquid SG of 1. They also provided comprehensive cfm consumption, cone angle and throw distance information related to that particular model at the operating air pressure and liquid feed height.
Your statement of having 50 micron droplets is false as nozzles do not produce a single droplet size range. If you have a VMD of 50 microns you will have droplets in excess of 100 microns. No doubts you will refute the attached data but it is available if you use a company email address to make the enquiry, money talks.
 

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tree farmer

New member
my AA system is for real and the nozzel i choose i choose because the company provided the tech info that i requested. these are not devlan nozzles though but if im going to spend big bucks on a nozzle i want to know the VDM of the droplet sizes at varing pressures. i dont mess with gravity or siphon nozzles as the implementation of these types of nozzles presents all types of problems that are easily overcome by pressure feed nozzles. and imo i have much better control over the wide varity of droplet size and flow rates with just the turn of the pressure regulators. something siphon and gravity nozzles can only do by changing the head (lenghting or shorting the tube run to the nozzle)or swapping nozzles . also from what i can find siphon and gravity fed nozzles use more cfm than do pressure fed nozzles and less air means i can use a smaller air compressor and save on electric. also providing backup for AA systems can easily be overcome with the use of a couple hydraulic nozzles as long as your set up for pressure feed anyway.of couse all this is very expensive but as a hobby i can justify it. . AA takes alot of testing and hardware swapping to get right but will produce the nicest roots although a proper hydraulic setup can hit the ball out the park also.
ive never noticed these abilities to change the structures of different phenos maybe nute regiments can accomplish this but plain old AA or hydraulic hardware in my experiences hasnt.
 
Last edited:
T

thefatman

Delavan`s tech dept knew exactly what i wanted to know because i asked specific questions and outlined the parameters such as liquid with specific gravity of 1 (aka water not oil) and a droplet range of 30-80 microns.
Good for you. I am impressed that you could formulate questions of value.

I was passed from one guy to another but eventually got the information.
So you are more persistent in obtaining answers that all members of a competent technical stay should have ready access to. If you were a boy scout I would exopect that would eran you a merit badge.

You imply Delavan doesn't provide technical support for their products, ime and from the attached data from delavan tech thats bs, Dude I am just obviously not as persistent as you. I figure after having contact with three tech reps the information wouldnot be forth coming so I gave up trying to get calculated information from them. Shoot no merit badge for me. Anyway I had hoped for emperical data from results of actual testing not theoretical answers.

much like your comparison of heat generated by a compressor vs water pump. Dude I am not compressing the air to high pressures so there is really not great amounts of heat generated. Besides my compressor is a three cylinder compressor with cooling fins on its heads and the lines from the compressor heads to the tanks are also finned.

If you fill a 5 gallon tank with compressed air to 100psi you wont be able to touch the compressor head. Who plans on compressing the air to 100 psi. Not me. I will admit that compressing air to 100 psi with a single piston (single stage) compressor is not efficient and that it would likely produce quite a bit of jheta especially if it wsa not a well fiined system.

A water pump filling the same tank to 100psi would be barely warm. That does not imply that the compressed water stores more energy dude.

The inaccuracies in your information and lack of pics to support your claims leads me to believe your system is purely theoretical.
Believe what you wish dude.

The attached pic shows the droplet size range for one particular SN Delavan nozzle in the 30610/30609 series. The tech dept use dedicated software to calculate which nozzle will meet the customers requirements, in this case the main parameters were droplet size range and flow rate. I have purposefully omitted the gravity height and nozzle model number. And why did you do that dude.
The data shown relates to 41.16psi air pressure (2.8bar) gravity feed with liquid SG of 1. So you say.

They also provided comprehensive cfm consumption, cone angle and throw distance information related to that particular model at the operating air pressure and liquid feed height. Where is that data dude. Different nozzles have different requirements and perform differently dude.

Your statement of having 50 micron droplets is false as nozzles do not produce a single droplet size range. I did not claim all droplets were sized at 50 microns dude. I do not know of any HP nozzles that produce all its droplets at 50 micron. So what is your point dude.

If you have a VMD of 50 microns you will have droplets in excess of 100 microns. So what is your point dude. No doubts you will refute the attached data but it is available if you use a company email address to make the enquiry, money talks. You spent money to obtain this data which is limited to test data for one nozzles size? Wow a troll who spends money to attempt to bash others.


Dude I made inquires by email but did not receive the data you obtained.
Perhaps if I was more anal I would have harassed the techs in the tech department enough to actually find someone that could provide the data. I had assumed they would supply me with empirical data from actual tests if they existed. They did not supply me with such data. Again I must say if you were a boy scout you might just deserve a merit badge for your persistence. Wow if you go to such exrtrodary lenghts just to try to bash someones post just think how much better that effort could be used to perhaps post some photos or journals of your systems or grows.

I have no way of measuring droplet sizes or determining what percentage of what droplet size is in what size range.
I do know from empirical data that my air atomized systems require less energy to operate then my HP aero systems required and the end results are much more consistent.
Good day dude.
 
T

thefatman

my AA system is for real (So you say) and the nozzel i choose i choose because the company provided the tech info that i requested (Again so you say) these are not devlan nozzles (And what are they TF) though but if im going to spend big bucks on a nozzle i want to know the VDM of the droplet sizes at varing pressures (So have you gotten this data and spent the big bucks and built this AA ssytem or are you still playing with your HP pod system). i dont mess with gravity or siphon nozzles as the implementation of these types of nozzles presents all types of problems (Head does not cause problems unless you do not keep the head fairly constant. That is easy enough to do. In fact head pressures are like you say adjustable and they provide cheap easy ways to adjust your atomization results at a much lower expense and OP cost then that of a pressurized AA nozzle system.) that are easily overcome by pressure feed nozzles (Pressure fed nozzles just add more costly equipment for their use and it requires very little effort to change a gravity head controlled by fluid feed heights) and imo i have much better control over the wide varity of droplet size and flow rates with just the turn of the pressure regulators (But is it really worth the added costs involved? I do not beilieve so)). something siphon and gravity nozzles can only do by changing the head (lenghting or shorting the tube run to the nozzle)or swapping nozzles (Not true prsseure of air supplied also makesa diffence and changing the gravity head oradjusting the air pressure is a very simple cost effective method unlike using pressure fed AA nozzles that require much more expenditures for equipment tha also uses energy that must be paid for and also greatly increases maintenance costs). also from what i can find siphon and gravity fed nozzles use more cfm than do pressure fed nozzles and less air means i can use a smaller air compressor and save on electric (Perhaps, but you just spend the money you say can be saved by spending it buying pump(s) and mintaining accumulator tanks, regulators pressure relief valves and pressure switches etc. for the set up to supply your nutrients under pressure and a back up system). also providing backup for AA systems can easily be overcome with the use of a couple hydraulic nozzles as long as your set up for pressure feed anyway (How are just a couple of hydraulic hoses going to supply you with a complete back up system TF). of couse all this is very expensive but as a hobby i can justify it (So you say). AA takes alot of testing and hardware swapping to get right but will produce the nicest roots (True) although a proper (proper is the key word) hydraulic setup can hit the ball out the park also (If HP aero is just as good then why did you switch at great expense from your HP pod system to an AA system if in fact you actually did).
ive never noticed these abilities to change the structures of different phenos maybe nute regiments can accomplish this but plain old AA or hydraulic hardware in my experiences hasnt (I am not certain just what you are trying to say in regard to this change the structures of different phenos statement TF) Are you saying the dwarfed Sativa plants you grew in your HP pods with the small internodes spacing was soley due to your having nutrient problems with your HP pod grows? Strange as even the old atomix adds of old nearly always wrote about air atomized grows having much smaller internode spaces than other hydroponic growing methods, and you claim HP aero grows equivalent to growing by air atomized (AA) grows.

Please post some photos of this AA system you allege to have built. In the past on other forums you never indicated that you worried about possible legal repercussions from posting photos on line on a mj growing forum so posting such photos should not be an issue for you TF.
 

tree farmer

New member
i already posted pics and took them down because i thought you saw them. well ill post a few more. i doubt you will understand the pics anyway but maybe you can figure a few things out. these are just old systems ive built and ran and not even what i have testing now. i have no problem with your real or imaginary system but its hard to not see bs when ive spent years playing with these systems and the things you say about them dont add up to my real world experiences. even a good hydraulic nozzle like bete PJ series has VMD data and any one of the google AA nozzle searches will pull up companies that have the data. this is how they make thier living.
im sure you will critize my old setups but at least i know what i have done is real. ill continue my work as it doesnt depend on yours or anybody elses opinions because yes it is a hobby and one i enjoy regaurdless of the setbacks no matter what you might think. and as far as me never posting pics of plants you need to get around the forumns because there are pics of trees and shrubs ive run using HP setups. have a nice life.
 
T

thefatman

i already posted pics and took them down because i thought you saw them. (Aren't you a lippy little troll. Do you think I have even given you or your attempts at acomplishing something since I last posted on RIU). I see one well ill post a few more (not impressed by the photos). i doubt you will understand the pics anyway (your dismal work in the past was not impressive even when your pictures seemed passable and your work then showed the work of a novice so why should your present picture impress me or mistify me -timers solenoids a single net pot space and a single visible rear portion of what appears to be the bete TA nozzle. I assuming the needle clog clearing device works no better than when atomixd used the same type of nozzle in a siphom fashion) maybe you can figure a few things out (your a funny little man even with your limited education and minimal mechanical skills). these are just old systems ive built and ran and not even what i have testing now (wow failures again and making new stabs at accomplisj hing somethingof note). i have no problem with your real or imaginary system but its hard to not see bs when ive spent years playing with these systems and the things you say about them dont add up to my real world experiences. (Well gee troll the last thing I heard from you was when you were failing in your ability to grow trees with your HP pods. Nowq your saying your moving on again I suppose due to more failures. It was your opinion before during your dismal pod ventures that it was not a realistic idea to build a AA system that Hp was the only practical method of growing true aero. I guess your dismal results with your Pod HP pods made you change your mind and led you to attempt to do what I and others were doing. Considering your many difficulties in just designing and operating a HP system I really am not much interested in what you imply your "real world" experiences have shown you) even a good hydraulic nozzle like bete PJ series has VMD data and any one of the google AA nozzle searches will pull up companies that have the data (why are you about talking about Pj series nozzles when it looks like your using a single XA nozzle) this is how they make thier living (they nake their living by charging extremely high prices to anyone they can sell their nozzles to>.
im sure you will critize my old setups (they deserve criticism and likely your new AA system -if it is even is your system- produced a lot of dismal results before you were able to accomplish any thing resembling a good grow) but at least i know what i have done is real (real what -more dismal failures-) . ill continue my work ( Your work? What are you a reseacher/scientist/engineer now rather than just a hobbyist playing like he or his "work" is important) as it doesn't depend on yours or anybody elses opinions because yes it is a hobby (true your efforts will never be profitable due ti your v continual failures) and one i enjoy regaurdless of the setbacks (yes you have and probably always will have set backs especially when you do flip flops continuously and are self taught and not to well at that, bet that is expensive to make so many mistakes so often) no matter what you might think. and as far as me never posting pics of plants you need to get around the forumns because there are pics of trees and shrubs ive run using HP setups. (Post some of the links to these trees you sayyopu finally accomplished growing instaed of the dwarfs you previously grew. Last I heard from you your pictures were only shared by PM or to certain people with me being one of those people. They were not impressive but were instead quite pathetic so you gave me no reason to even think of searching you out to see if you ever managed to accomplish anything of note) have a nice life (right back at you BS'er)

Say hi to your hot buddy atomiser who was and probably still is the intellect behind your "work."
 

tree farmer

New member
its to bad you cant recognize his intellect than maybe you to could learn something from a person who has helped so many while you have done nothing for anyone. many people are building HP systems designed around his principles but i havent seen anyone building any HP systems around your principles because you have never shown one proof of any of your work or designs while he and i have shared what we have learned thru real experience. i have learned much from him but he knows i was doing HP before i even ran accross his info. you though when you first came on the scene you were playing with a lp system and my guess is you probably still are. maybe you could post a pic of just a john guest fitting then maybe someone might believe you actually have any experience. but thats right a pic of a fitting might get you in trouble. again best of luck with that AA system. you wont see me troll you as you call it anymore ill leave you to yourself the way you want it.
 

PetFlora

Well-known member
ICMag Donor
Veteran
[COLOR="Blue"]eburna: Sorry that your thread has deteriorated to this. Stop by my journal and get some insight[/color]
 

eburna

New member
PetFlora: haha, yeah I stopped paying attention when it turned to a pissing contest for who's AA system is more legitimate. I think HP aero is definitely more suited for a hobbyst grower like myself.

So I ended up taking a break from growing once the semester started at my college. However, this winter I'm determined to actually build this system that's been germinating in my mind for a while now. I'm probably going to start with the simplest system (sans accumulator) and refine it more and more as I progress. Besides, I can't really even find a decent accumulator online and I'm not sure which solenoid to use.

I'm interested in testing some of these predictions about droplet size and root quality (I'm a bio major and I have access to the resources of my college's stockroom). Once finals are over, I'm going to spend some time looking into the scientific literature behind aeroponics to figure out exactly how they quantified droplet size. Once I figure that out, it would be pretty easy to run some tests.
 

PetFlora

Well-known member
ICMag Donor
Veteran
Wow no activity in 3 months then, out of nowhere...

NASA is the force behind HPA for feeding people real food on space stations


There are some good HPA threads on other blogs. Google HPA/High Pressure Aeroponics... and look for Trichy Bastard. His thread is loaded with guys from the deep end of the pool. All use accum/solenoids, PRVs... and sub one second cycle timers
 

Will Gu

New member
How to Calculate the Number of Nozzles For different areas and heights of the greenhouse, a different number of spraying units will be required.

1. Calculate the amount of air in the greenhouse: the difference between the sum and the space occupied by the beds, equipment, and plants.

2. Determine the stable humidity value in the greenhouse.

3. Calculate the critical and average temperature values in the room. They depend on the orientation, the lighting of the greenhouse on the site, the area, the transparency of the covering material, the tightness of the structure and ventilation methods, and the heat storage capacity.

4. The physical parameter of water evaporation energy consumption is 0.7 kWh per 1 kg of water. With this in mind, calculate how much water you need to spray your greenhouse to reduce the temperature from 30-40°C to below 20°C.

 

Hiddenjems

Well-known member
I made a true high pressure setup with a 150 psi pump and fine misters. While very cool, it failed to outperform my floodtables. I’m sure with some tuning and the right strain it would do better. But it wasn’t the big jump in production or time I was expecting.
 
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