Setting the old grow room up again, and i want to go organic with my hydro unit. I utilize an ebb n flow system with three flood tray, i usually use 3ft rock wool slabs with 6x6 blocks. For nutes i usually use Technaflora products. What i want to do is drop the rockwool and chemical nutes, in hopes of being rewarded with better taste and smell, can anyone steer me towards a substitute for the rockwool that will work well in an ebb n flow set up? Yes i know i spelt board wrong.