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A net pot holds the root ball and lets the roots grow through into the water. Choose its diameter to match the holes in your system: 5 cm for NFT channels and most towers, 8 to 14 cm for larger plants and floating rafts. Packs of 50 net pots cost less per unit when you are fitting out a whole system.
For tomatoes, peppers and cucumbers, the Dutch bucket and the fabric pot offer a far larger volume of growing medium, and aquaponic grow beds from 45 to 80 litres take a bed of clay pebbles. The article Grow pots in aquaponics helps you choose the right size.
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