Grow looks solid man, i can tell ur set on h202 ( and i regularly spray my roots with mild solution at first sign of rot or even nute burn) but you might be interested in something like sm 90 or dutch masters gold zone. I personally use sm 90 as a wetting agent, root simulator and mildly as foliar if any signs of bugs. plus its great to flush your medium with (diluted of course) if you notice any signs of pythium . Just my 2 cents looking good bro.