Hi fella, bud candy is formulated for hydro, it is used in soil as well, it's basically sugar with a few added bits in there which feeds the microbes in the soil. Molasses will do the same trick for a fraction of the price but that's not what you want to hear!!! A tablespoon per gallon of water should see you right, you can use it now through till around week 6ish, hope this helps 👍