SUNSHINE Advantage PRO - eco-friendly concentrated nutrition booster for hydroponics, edibles, and organic gardens. Formulated especially for vegetative and pre-bloom stages of plant development. Can be used for daily feeding with every watering, applied through irrigation injectors or by hand-watering. Scientifically-balanced stable formula is organic Amino-acid based and has NO EDTA chelators to eliminate nutrients lockup; it does not affect crop taste. Organic Amino acids greatly enhance stability of all Sunshine boosters and provide excellent absorption of trace elements. Pollinating insects friendly. DIRECTIONS: Mix 10 ml with 1 gal of water. Can be used with every watering; compatible with other Sunshine Boosters. Intended to be used as a part of the SUNSHINEâ„¢ Complete Nutrition System. Do not mix with other concentrated fertilizers. Element Content: N 1.1%, P2O5 2.6%, K2O 5.2%, S 1.2%, Mg 1% (see Guaranteed Analysis (PDF)). Fertilizer license # F002866.