If you are going with the
aeroponic setup and you plan on growing lettuce or peppers the full cycle from germination, growth, reproduction, pollination, and seed spreading stages you will need to spread the plants further apart compared to the picture I posted earlier. With lettuce like romaine you could get away with growing in every 2 inch net pot but butterhead or lceberg type lettuce would have to be grown in every other net pot as they are wider. Same goes for pepper plants they need more room so every other net pot you could get away with.