There is a 2" drain in the second tote that flows back into the reservoir. The drain is fed by a vertical tube that levels the water in both tanks about halfway up the net pots.
I recently got a pretty good deal on a ActiveAqua Hydro Culture. I got the 1/10 but my grow is half the volume of water as yours. Been really impressed that it was not that much to run $ wise and it had no problem holding 68 degrees in an hot garage in summer… I really like your set up - but you might pull very 3rd cup - if they grow too much into each other it is hard to keep the moisture/dew off them in my experience - even if you control the humidity in the grow tent.
Thank you. The plants will not stay in there but a couple months. Just part way through veg state. If I have to trim them I will… Then they will be transferred, via net pot, into a 5.3 gallon pail system with much more spacing in-between each plant. And they will not be in a tent, but in my milk house.
*the tent is also inside my milk house.
I have to build that system after my soil grow has run its course.
I’m also using the 1/10hp. Running somewhere between 35 and 40 gallons through it at fairly high speed. It was $300 from a shop in CO. $45 to ship it (could have gone and picked it up but who wants to drive 5 hours?)
Looking good @NYDon be careful with how fast they’ll get away from you though.
My 4x3 is a bunch of plants no more than 3 months old. Most around 2 months. It’s a certified disaster and the biggest offenders are the DWC plants.
Ok, if you don’t mind me saying so, it all looks great! Looking forward to following along.
I would highly recommend getting away from using the garden hose ASAP, if that’s a hose.
I had mine hooked up like that till I changed to black 3/4” tubing.
That garden hose is very porous and will allow algae and a build up of slime to grow quicker.
Good luck!
Great root development already - bet those take off. Is your water dancing?? And I always have my grow vessel filled to high - water two inches below the cups? Looking forward to watching this one
Waite for one of the other guys… But in my DWC hydro system - there needs to be 2 inches below the pots in the grow vessel to create space for air to get to the roots and I run several airstones to put oxygen in the water - water dances under the cup with bubbles. Again - wait for the other guys - yours might be a different set up.
it’s all Greek to me though I’m just an old dirt farmer. I am looking forward to seeing all this stuff in action though… good luck 
change my solution? Nah. 
