Make sure you water level is very low in your basin under your pots, like an inch or so. Also make sure your substrate is very airy. Size of net pot for me was determined by distance from pot to water. I have my water level just barely touching the substrate in the net pot “1/8”

hope that helps with your design

They just don’t make them big enough for my needs.

1/2 gallon pot 12/12 from clone.

I bought a roll of weed barrier fabric, used a pot as a mold and hot glued my own fabric pots. Pack them close together and make a floor pan to bottom water.

I fit almost 50 of those in a 4×4 years ago. Under hps I got 1/4 to 1/2 oz per plant. Hope that helps