yes, its the high phosphorus content for flower and bloom stage and is water soluable. It's like 15 35 5 or something along those lines. On plants I use a half teaspoon per gallon and I have the majority of a 1 lb box left. I know it's the right chemicals but i wouldn't know how much to use since it is concentrated water soluable fertilizer. Has anyone worked with a similar product and if so how much would you use per acre?