Hydro is a lot cleaner, and I find easyier to manage, I run a DWC Operation with two tanks each with 6 plants. and also a Flood and Drain like Albe Fcuk. on a much smaller scale. I just have 4-5 plants at each cycle making 16-20 plants in total. I do not have 4 trays. I use 2 trays and two...