Hey mike in the future hit these hydro question in the hydro section, then i can better assist in finding said threads!
Ok good question though! I found when using 29% h202 for a ebb system with 55 gals of water add 200ml to 55 gals
And add every three days without fail. So 4ml per gal. And i have gone as high as 10ml per gal without issue. But start
Off with 4ml per.