Hey sman. Listen not the nute expert but i will suggest that you stick to the required dosage that the manufacturer suggests.Most if not all will tell you just about the same but search the forums on nutes.Hey that search button at the top of the page works wonders.Just read a lil on big grow until you get the info that you're satisfied with or until one of the mods gets back to you.You do not want to over nute em so get that info bro....patience is key.