Does anyone input any spikes in EC @ peak flowering? Or alter the ratio of your nutrient?
Last edited:
-
Happy Birthday ICMag! Been 20 years since Gypsy Nirvana created the forum! We are celebrating with a 4/20 Giveaway and by launching a new Patreon tier called "420club". You can read more here.
-
Important notice: ICMag's T.O.U. has been updated. Please review it here. For your convenience, it is also available in the main forum menu, under 'Quick Links"!
big plant ppk
- Thread starter delta9nxs
- Start date
Edit: misread the question
Last edited:
Just reread thread this week. Checkin on what I need to get to start my build. Got my Jacks in Dec. tubs last week TS so cool, they didn't have them so they wrote me a rain check for 4, they were in the next week. got my connections for my return lines. Going to order pump this week 950 gph. Got a distribution manifold on my mind so I want have so many lines. Not going to be big just 4 plants sites for bloom, 3 for veg. I have a 50 gal fish tank for res has drain on bottom, almost gave it away once. have tank heater to just incase water temps to low in winter. Just wanted to let you know another convert working towards synergy. Hope you are well D9. Been a rough few years here too. now back to my lurking ways.
The problem I see is salt build up at the surface of the grow media. With a flood you flush the salts down. The salts will build up at the surface through capillary affect. With the new lower pot this will have a big affect on the amount of media available for the roots. If you go to all the trouble to lower the perched water table why would you then give up the same amount of media at the top of the pot?
If insisting on creating an overflow at 1" above media, it is much easier to control with ball valves and timing rather than always making sure to fill with just the correct amount of media every grow which may rise with root growth as mine did. My root balls are so big that could not shake any extra media off
Sqydro
Member
update on these fine looking ladies grow4flow if u could sir be much appreciated by all im sure
update on these fine looking ladies grow4flow if u could sir be much appreciated by all im sure
Here's a couple more for you.....
I think I'm at about 3 weeks? Not completely sure
Last edited:
"what i do think will blow the plant up is direct o2 injection into the root zone between pulses. i'm thinking about ways to do that now." (Demonic Deluge #227, d9)
Is anyone aware if d9 developed a way to do this? Did he give this pursuit up in later posts?
Is anyone aware if d9 developed a way to do this? Did he give this pursuit up in later posts?
Seems sound to me. RDWC works so I don't see why one couldn't throw some turface or any medium in the middle of the water current....
I'm skeptical about the benefit of the PPK's "plunger effect." Mechanically it does serve a purpose, but I'm specifically skeptical that plants benefit from such a mechanism. If they do, I believe flooding and draining would prove a more superior growing methodology.
Plants do need some oxygen to the roots, but pathogens thrive in oxygen rich solution. One can choose to protect the plant or embellish it at risk.
WRONG! Pathogens thrive in environments with low oxygen, they cannot survive where there is high levels of oxygen. That is exactly why hydro growers spend so much time and money coming up with ways to get more oxygen into the water
.
Real world experience has taught me otherwise. I observed pathogens in systems with air air bubblers or stagnant reservoirs exposed to the air. In designs like a hempy bucet, I've never experienced pathogens in the solution zone.
One theory about why hydroponics yeilds more is because supposedly the increased oxygen increases transpiration which is correlated with higher yeilds. Now there are good studies that conclude transpiration = yield. On the contrary, there are good studies that conclude less transpiration can result in a greater yield with the application of chitosan which increases ABA levels. Transpiration may be hindered, but at the same time a closed stomata is significantly more protected from pathogen attacks.
One theory about why hydroponics yeilds more is because supposedly the increased oxygen increases transpiration which is correlated with higher yeilds. Now there are good studies that conclude transpiration = yield. On the contrary, there are good studies that conclude less transpiration can result in a greater yield with the application of chitosan which increases ABA levels. Transpiration may be hindered, but at the same time a closed stomata is significantly more protected from pathogen attacks.
I have a friend already doing this using an oxygen concentrator and a PVC diffuser, plants growing 7' tall but I don't see an increase in yield
You have a lot to learn about plant processes. Increased oxygen at the root zone does factor into increased transpiration at the leaves. Which is definitely a huge factor in increasing a plants yield. Transpiration is a part of growth (uptake of o2 and release of co2 and water), without maximum transpiration you aren't maxing yield, period. Honestly if you are considering adding something to your plants that hinders growth with the hopes that it will protect you from pathogens you need to rethink your whole game plan
.
What about an excessive demand for transpiration? Aka water stress...When air is a combination of too hot and dry above ground, a plant can not keep up with the amount of transpiration required. Plant growth is more strongly correlated with light. We all know how more light comes at the cost of more heat and drier air, but we still get bigger plants overall... Chitosan reveals that transpiration does not bottleneck photosynthesis.
Feel free to look into foilar applications of chitosan and associated decreases in transpiration, less time to mature, and increases in yield with reduced instances of pathogen infections. Some twin studies were done in fields along with completely concealed growth chambers. I understand this challenges more conventional wisdom.
Feel free to look into foilar applications of chitosan and associated decreases in transpiration, less time to mature, and increases in yield with reduced instances of pathogen infections. Some twin studies were done in fields along with completely concealed growth chambers. I understand this challenges more conventional wisdom.
Introducing something to help overcome an environmental stress will not yield the same results as fixing the cause of the stress in the first place. Case and point, grow two clones, one in an ideal environment, and another as you described above with chitosan supplementation. Which do you think will grow faster, and yield better? Assuming all else is equal the one in an ideal environment will win. No matter how you slice it, stressing a plant lowers it's yield potential. Can some of the effect of said stress be mitigated to a certain degree? Absolutely, but you still won't achieve 100% performance. You are right that transpiration isn't the only limiting factor, but until you have no limiting factors your yield is being effected (blackman's law). I have studied chitosan, so I'm well aware of it's effects on plants. IMO the pro's don't outweigh the cons. It's just another Band-Aid solution. If you are having problems with transpiration due to environment, either change your environment to better suit your plants, or change your plants to better suit your environment. If you are having pest issues, look into the cause rather than just throwing an immune response activator at your plants. I assure you, chitosan won't stop the pathogens from continuing to grow and prosper, only making a environment unsuitable for them to grow in will do that.
Also, if you are going to cite studies, leave a link to them so they can be scrutinized by the community at large
.
I am not talking about applying a bandaid to mitigate a stressful environment. I'm saying there is research showing chitosan can increase yeilds in an already ideal environment.
What are the cons of chitosan? I spent 20-30 hours researching it these last few weeks and I never came a crossed a single one.
Chitosan isn't only an immune response activator... it changes many genes. I think the most interesting aspect is how it actually closes stomata and how that indirectly protects a plant and seems to somehow increase vigor.
There doesn't seem to be much interest from the community regarding said topic. The studies are a challenge to read. Anyone can google "chitosan foilar" to cite what I've said if there is doubt. The one with peppers is one of the more in depth studies.
What are the cons of chitosan? I spent 20-30 hours researching it these last few weeks and I never came a crossed a single one.
Chitosan isn't only an immune response activator... it changes many genes. I think the most interesting aspect is how it actually closes stomata and how that indirectly protects a plant and seems to somehow increase vigor.
There doesn't seem to be much interest from the community regarding said topic. The studies are a challenge to read. Anyone can google "chitosan foilar" to cite what I've said if there is doubt. The one with peppers is one of the more in depth studies.
