NO! Google up Alpha Chemical co. You buy K2SO4 from them. This is Potassium sulfate and it's made for growing applications. 227 grams per gallon of water (add 1.5 tsp of DARK brown sugar to that) 10 ml per gal of feed mix. Some use it straight at 1/4 tsp per gallon of feed. I might use a little less then that 1/4 tsp.