Yeah, I was that worried about overwatering them that I went to the opposite extreme. I was giving them around 2 litres a day between all 27. Eventually realised I wasn't giving them enough so upped it to 4 litres. Giving them nutes every second day. Going to have to wait till I can sex them before moving to bigger pots. There just isn't enough room...i agree square ones so you dont waste space and water them they do look thirsty how much are you doing for water and fert.