big plant ppk

[RM - aquagrower]

Maybe I'm wrong, but I think that SRGB isn't saying to just drop the bag into the lower bucket, but to outfit a tailpiece into it (or maybe he could sew some type of fillable wick into the bottom of the bags). Would still need some type of stand to hold it up to give the proper air gap.

Still don't think that it would work too wall, 'cause wouldn't the solution run threw the bags before "full saturation"?

I don't know tho, as I've never used a PPK or coco, and didn't know turface existed a month ago. Just following along, and learning some new things.

 

[bobblehead]

I have plants in #5 SP's sitting on top of 5 gallon buckets full of lava rock and nute solution. The pathogens that cause root rot are anaerobic, meaning that they live in an environment lacking in oxygen. Even if the roots in the solution began to rot... Which I have yet to see but summer could potentially change that... The air-gap would kill the anaerobes. The bags filled with coco and the roots inside would already be colonized by beneficial aerobes, preventing any anaerobes from taking hold as all resources are already being consumed.

RM- rather than sew in a wick.. it would be more simple to put a small slit in the bottom of the bag and pull through 1 or multiple rope wicks.

Waiting for more

 

[delta9nxs]

I have plants in #5 SP's sitting on top of 5 gallon buckets full of lava rock and nute solution. The pathogens that cause root rot are anaerobic, meaning that they live in an environment lacking in oxygen. Even if the roots in the solution began to rot... Which I have yet to see but summer could potentially change that... The air-gap would kill the anaerobes. The bags filled with coco and the roots inside would already be colonized by beneficial aerobes, preventing any anaerobes from taking hold as all resources are already being consumed.

RM- rather than sew in a wick.. it would be more simple to put a small slit in the bottom of the bag and pull through 1 or multiple rope wicks.

Waiting for more

i have said that this device could be operated with an intentionally anaerobic solution and still work fine. and it could. but i have never had an anaerobic solution in one of these because any roots that do make it down to the bottom reservoir are sitting in a body of water that is naturally aspirated by atmospheric partial pressures and has a low bio demand on it as the plants are getting all they can stand from the air and are not depleting the solution significantly. i have never had root rot in one of these with res temps up to 84f and no chiller.

the nutes are kept in solution by the venturi principle and just a lot of simple movement throughout the device.

pics later today!

 

[bobblehead]

it's science...

 

[delta9nxs]

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[SRGB]

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[delta9nxs]

hey fred! wassup!

i'm nowhere near the coast but i went into a little cafe the other day and they had a cajun chef working there. his specialty was shrimp gumbo and it was outrageous! he's gonna whip up a batch of crayfish etouffee' soon!

man, i miss the ocean!

 

[SRGB]

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[disciple]

 

[high life 45]

Watering a plant or tree once per day does not decrease the total volume of water or nutrient solution that the plant uses during that period.
To begin an accurate examination of this process, the gardener should measure the amount of water used over a given period. For this example, 24 hrs might be an easily measurable interval. Handwatering or mechanical watering, for this example, has absolutely no bearing on the outcome.

No matter how much water is given over a period,
a given specimen is only able to uptake and transpire a certain amount over a 24hr period.


Providing too much more water/nutrient solution to a given plant over the same period might tend to provide a span of time for the pH of that solution to change, thereby potentially altering the composition of available elements.

Im no expert here, these are just my thoughts....

IMHO The PPK needs "too much more water/nutrient solution" to keep the system as a whole balanced. If I provide only what the plant needs, the plant uses it and then the solution becomes out of balance, and nute def start to show up.

My data shows a given specimen is able to take up and transpire more water in a 24 hour period than is able to be delivered at 1 given time per a day.

With a ppk you cant deliver all the water/solution that a plant can use by watering once per a day, this is why there is a wick and res etc.

D9 is reaching "saturation" when he feeds. The entire container is full of water, that is the maximum amount of water/nute solution that can fit in the container.

Your words imply that if you "saturate" once per a day its the same as 12x per a day.

If a plant can uptake or transpire more in a day than will fit into its container than it must be fed more than one timer per a day.

Lets say d9 saturation is a volume of 3 gallons every 2 hours.

That is a total of 36 gallons.

What I gather from your words is that watering 36 gallons once per a day is the same as 3 gallons 12x a day.....

idk

 

[bobblehead]

What I gather from your words is that watering 36 gallons once per a day is the same as 3 gallons 12x a day.....

idk

I'm certain SRGB will have a more in depth response... As they are good at that...

but SRGB is suggesting that you deliver 36 gallons in one feed, and that the plant roots will then grow down into the basin containing the runoff and wick it up, without an additional wick.

There's only one way to find out!

I'm curious though... Since SRGB and I have spoke in PM about plant support to ease the stress on the plants so they can focus more on bud development... Wouldn't the same apply to the roots? Wouldn't it be beneficial to deliver the nutrient solution to the upper container, so that the plant doesn't need to seek out that solution?

I'm trying to soak up all the knowledge I can here... I have a growing system to build.

 

[DamnUglyDogE]

As always. ..
Great read...
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[high life 45]

big plant ppk

I'm certain SRGB will have a more in depth response... As they are good at that...

but SRGB is suggesting that you deliver 36 gallons in one feed, and that the plant roots will then grow down into the basin containing the runoff and wick it up, without an additional wick.

There's only one way to find out!
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Ok, I understand that the root grows through the bag.

I'm addressing the one feed vs multiple feed idea.

I'm just saying that from what I have seen in a porous soilless media, multiple feeds outperform a single feed of the same total volume regardless or wick/basin/etc.

 

[bobblehead]

Ok, I understand that the root grows through the bag.

I'm addressing the one feed vs multiple feed idea.

I'm just saying that from what I have seen in a porous soilless media, multiple feeds outperform a single feed of the same total volume regardless or wick/basin/etc.

Thanks. I reread your question and I understand it differently now. I agree with you I've had the best results with multiple feeds. At the same time, I've never measured exactly how much my plants drink and I've never fed them exactly what they would consume in 1 day. I assume it's just easier to throw nute solution at the plant, let it take what it wants, and recapture the rest. If someone was monocropping in the same system cycle after cycle... Then you probably could determine exactly what that plant drinks at whatever stage of development it's in.

 

[delta9nxs]

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[SRGB]

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[DaveTheNewbie]

i have never had root rot in one of these with res temps up to 84f and no chiller.

give me a chance and im going to push this to its limits

and to people reading or participating in this chat re SRGB i strongly recommend you go to this section of the forums and read his stickies.
very intelligent and education, and it will help you see his ideas in a clearer light.
and some real simalarities to PPK regarding wicking options and water under the plant.

 

[SRGB]

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[delta9nxs]

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[delta9nxs]

second container set up today. fully flooded in one minute. same container fully drained two minutes later. absolutely no standing water on the bottom. the medium acts like a capillary siphon and pulls water over the lips of the tailpieces.

#1 at one week. the clone in the small container is #2. it is about the same as #1 was seven days ago.

i haven't oriented the plant or started training yet.