What I am saying, I mean what makes Hempies special is the fact there is a small water reservoir at the bottom of every bucket, right?
My "modified" Hempies are like this:
You see them sitting in those trays. But this means it takes longer to drink (empty this reservoir) because it's more water at the bottom, compared to classic hempies. The more time it takes them to use the water, the more "bad" this water gets because there is no active aeration like you'd have in a tank w/ a pump etc.
(This is a big difference to many actual Hydro systems where oxygen is key. This is passive, there is no oxygen actively added to the water.)
But...it seems the plants (the big ones) currently take only 2-3 days to drink the water from the reservoir...so I think I might be good. Otherwise (with the high temps etc.) this COULD cause root rot, algae and all kinds of crap. This is why I said I am not so sure how this will turn out.
Until now...my plants grow AWESOME. They're already much bigger than on this picture.
Edit: I would have LOOONG gotten me a Bato Bucket system like the GH Panda Hydro system. This one:
It's basically like Hempies but recirc w/ a bigass tank. It looks AWESOME. Except that I would have no idea how to manage a 125L tank, emptying and replacing the water in tank every 7-10 days, I have no water connector on the balcony and not even a drain. It would be a massive pain in the ass as far as I could tell, or at least such a PITA it would not make Hydro/Hempies "easier" as compared to soil growing, but more difficult. Heck I really wish I had a drain and hose on my balcony (where the green house is) like I have on the roof, all this wouldn't be a problem.