Pond Flourish Tabs are growth stimulators for pond plants in a tablet form for root supplementation. It contains a broad spectrum of essential trace elements, vitamins, and amino acids. It is rich in iron, manganese, magnesium, calcium, and potassium. It contains no phosphates or nitrates that would promote algae proliferation. Available in a 20 tabs pack and each tab treats a 1 gallon pot for a season. Works best when used with Pond Flourish.