Hey there, So heres the jist of what I know. Ive been using it for two years, and Its very tricky. Id say stick with the guidelines from aurora. If your plant is a heavy feeder, which you can research about, id give them a little more. If you are having any trouble I might try mixing something else in, say some kelp or fish emulsion, because everyone i know who has tried aurora says its very tricky but it is liquid and organic, which nearly impossible to get. So you are definitely in the minority here with me in getting the organic hydro fertilizer lol. I think bio bizz and aurora are the only two organic....If you are using a soil setup, no soilless medium, consider investing in some kelp meal, fish hydrolysate, bat guano, sea oyster shells, and call it a day. those four ingredients right there give you more than you need, and they are super inexpensive, and you can buy them locally. Most fertilizers that are organic are basically made of a mixture of these things...many grow shops will sell this stuff in like 5-10 pound bags for like 5-10 dollars each.