I am only using floranova grow and bloom (haven't started the bloom yet) 2.5ml per gallon and gh rapid start at the same, also will start using gh floraliciuos+ next week...I also use h2o2 29% about 2.5ml per gal. but I was told that h2o2 can destroy organic material in nutes and gh floranova uses organic and non organics so I am wondering if I should stop using the h2o2 with flora nova, and if this is the case what should i use to keep my roots healthy and getting enough o2...also thanx for the replys buddylove and cave dirt cody...i have never used hygrozyme as this is my first dwc grow so i wouldn't where to start with it but i will look into it...keep the helpful info coming...and thanx again...