Dmarscommentedweek 162mo ago
@ForbiddenSecret, Absolutely. I can't find any locally with a concentration of 35% so I order off the internet from a company called Blubonic. Lately I've been adding it after all the nutes are mixed up, but I've also tried adding it to plain RO water first before anything. I haven't noticed any difference with either method. I've also tried using it at high concentrations, 15ml per gallon, to kill fungus gnats but that did not work. The plants were unfazed by that level however, so now I add it at 10ml per gallon and have had zero adverse effects. The plants get added oxygen in the root zone as the H2O2 breaks down and the reservoir stays squeaky clean for practically the entire grow too. It's probably not the most cost effective method for hydroponics, but it does work well.
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