Have had pretty good luck growing must things except root vegtables. Radishes are okay, but not great. Same with carrots. From growing in soil I know it takes the three main things to be balanced. Nitrogen, Potasium, and pot ash. Plus other things like Iron. In aquaponics, nitorgen usualy isn't an issue, due to what the fish provide in the water. plus I add Iron chelate occasionly. But what are t…