The hydro system

Just off the last hydro grow and we had mixed results. Once again, the plants did outstanding, right up to about mid flower. Then things start to go down hill, again.
We’ve determined several issues that need to be addressed in order to provide a better living environment.


Our plants always seem to fall off sharply from mid flower on.
We’ve determined the reason is insufficient oxygenated water to the roots. By the end of the grow, the root system has taken up most of the area in the 5 gallon bucket. The air stones are smothered in the roots and total water volume is down to about 1 and half to 2 gallons.
So we are going to do a total rebuild of the system.
We are going to increase the volume from the 5 gallon bucket to a larger volume container, add a recirculation system, and make some room upgrades. New flooring and wall covering is on the list as well as a few more fans. Our dehumidifier is acting up, so that’s on the list too.
But first, let’s do a little math…
28.519.610.3=5753.58
5753.58in3/231=√π=12.6
V=πR2h
V=3.14159*(5.92)213.38
V=3.14
35.4*13.38
V=1488
R=14/5=2.8 so :thinking::thinking::thinking::thinking:
VI=(14-5/5)100
9/5
100=180…
At 8.34lbs per gallon/m3…
Ok..
By switching to a 14 gallon pot, we should gain a 180% more volume, thus, ensuring a healthy root system.
The rough layout

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Love the math, and I could be wrong, but I feel the outcome is likely going to be the same, because bigger pots = bigger roots, regardless of the system.

I had the same issue decades ago when I ran aqua farms. I fixed it by tripling the size of the air stones and pumps. I recently had the same issue with a wicking system, where the roots grew down into the base, and I fixed it by removing the pot from the wick and hand watering to the finish.

So it seems to me that you just need more air, and with bigger pots, you will need an even bigger air supply.

:peace_symbol: :green_heart: :dashing_away:

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Yes indeed, we have two 60ltr air pumps and a water pump is still tbd. I have one for a pond, gonna see if that work.
Agreed :100:, the more room they have, the more they’ll spread and take up probably most of the space. My hope is to keep enough good water around them to keep em alive for just a few more weeks, lol.

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Other possible configurations


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