Just a little confused! If you have micro and bloom then you most likely have 2 of 3-part system; you are missing GROW...in early stages you use grow as opposed to or in conjunction with bloom! the micro nutrients help with the uptake of the others...most of the time and flora has it, you can go to their site and get their instructions and it will help you understand, but there are charts and stuff that Zandor posted. he uses ghflora 3-part...latewood