Hi smoker
yes, too much of anything can hurt, except maybe sex , lol, well even to much of that can hurt. lol
I use 1 table spoon per gallon of water in my res.
You can go up to 3 tbs per gallon, i use that if there's a problem.
The extra oxygen mol. in h2o2 is quickly used up or evaporated out, from what i've read on it.
peace and good luck
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