It depends on your week, early weeks you want to give .5 no to 1 gallon then it slowly increases to 1ml(right before transition to flowering). 1.5ml 2ml( flowering stage), 4no in the late flowering aggressive growth bud weight stage. Then down low again while flushing prior to harvest. It can be used in conjunction with basically any other nutrient schedule. I'd start with their recommendations if its new to you.