Beginning flowering I would use maybe about 8 ml of both A and B. It depends on your plants of course but by the middle of blooming or so I would most likely use between 12-20 ml of both. I also add several mililiters of cal-mag as well as bud blood, big bud, overdrive and snowstorm as additives. If you don't have a TDS meter you'll just have to watch your plants to gain a comfort of what they specifically require. Essentially though, start with half strength and work your way up and just watch their reaction. I have overfed plants in later stages but by starting with half strength I've never burned plants by starting with half strength. I would suggest you get a TDS meter and it will be much easier to manage your nutrient strength more precisely.
