I will be using the dutchmaster advance grow and flower products, a and b for each. How should I use these? Has anyone used them before? Do I put in grow A and B at the same time and how much? Could I use the lucas formula?
You should use them as directed. There will be directions on the bottle. For the most part, you can follow their directions. I personally suggest halving their suggested dosages for young plants. I don't think you can use Lucas formula, there's really no need too though.