I've got a system that has 0 inches from the bottom of the pots to the tray. You can have any amount as long as the roots get wet during flooding. 3" is great. Of course the more space you have, the bigger your reservoir needs to be.
Opie Yutts Reviewed by Opie Yutts on . question about flood tray Using suspended net pots in a flood tray how much space should be between the flood tray and the bottom of the net pots? My guess is about 3 inches. thanks in advance Rating: 5