T-TECH THRIVE is formulated from the highest quality materials, all are water soluble in cold water. DIRECTIONS FOR GENERAL APPLICATION Apply at the rate of 4 pounds per surface acre of water with aquatic applicator. Begin applications late February to early March. At two week intervals, make applications for next month, then once every three weeks for nine weeks. Applications may be made monthly thereafter until the end of October. WARNING Using a Secchi Disk, measure light penetration. Once reading is 18 to 24 inches, stop fertilization.