Hashyanswered grow question 3y ago As @doctorgreenthumb, said. So if it says for example week 8 use 1ml grow, 2ml bloom, 1ml topmax then that's the ratio you should use if its to strong for an auto and you need half the strength then you halve all 3 product so that would be 0.5ml grow,1ml bloom, 0.5ml topmax. Thats just an example.