the directions on the package is a generial idea. depending on the size of the plants, strain, and enviroment(ie. co2, hydro, light) you should use less or more. just remember it's better to under fert. than to over fert. . .
dylan Reviewed by dylan on . ferts bloom fert says to use every 7 days. what if I use every 2-3 days? Rating: 5