I am only in my first grow but am using the gh 3 part series with supplements of Diamond nectar, Floralicous plus and Cal Mag plus. I did not start the first week of veg with the floralicious plus, i added it halfway through the second week. I did notice an increase in growth after adding it. My hydro store reccomended 1 ml per gallon. It is somewhat stinky, but that goes away after the first couple days in the res. Beware when opening the bottle for the first time after shaking it, it tends to bubble out with EXTREME FORCE, even after only gently shaking.