flush with ph balanced water. I do know that. H2O2 I used 2 capfulls for 6 gallons but that was just to help a little. I had no real problems. I don't think you want to add too much as it kills good microbs as well as bad. One of them should help you out on the amount. Hope this helps.
LOC NAR1958 Reviewed by LOC NAR1958 on . How much H2O2 do I add? Zandor? Anyone? how much H2O2 should I add to be safe....and What do you reccomend I flush my system with before going to bloom nutes Zandor? Rating: 5