Looking into setting up an NFT system myself, you say you used 3" pots all the way through. Did you have to hand water to begin with until the roots had grown out and is there anything you can do to encourage the roots out the net pots?
looking into setting up a similiar nft system myself. How soon after germination/cloning did you move the plants into the larger rockwool cubes and are you expecting to have provide additional support for the plants during flowering?