how many plants would be needed if used 15L airpot, growbox 1mx1mx2m? 4 plants, too much?
Depends on your feeding schedule nutrients and lights and strain. But I would say 4 is way to many. You'd probably get a higher yeild with 2 as more light can get to them bro. I use to have 3 in a 120x120x180 and had room but I wasn't feeding daily and wasn't using as many nutrients.