AgSafe Aquatic-Tabs are most widely used pond plant food tablets to feed waterlilies and all types of flowering pond plants. Unlike other pond tablets that feed for only two weeks - AgSafe Aquatic-Tabs provide initial quick-release nutrients and consistent time-release nutrients to insure proper growth and longer lasting blooms for 30-45 days. Special 10-20-10 fertilizer formulation contains micronutrients, humus, organics, sea kelp extracts, 76 trace minerals, natural plant growth hormones & vitamins, and mycorrhizae. A Copper-Free Tablet that is Fish and Aquatic Life Safe. Use 2 tablets per gallon-size of plant container.