Jungle Algae Relief Effectively Controls Algae In Ornamental Ponds Including String And Hair Algae (Spirogyra) And Blanket Weed (Oedegonium), And Green Water Caused By Algae Blooms. Algae Relief Can Safely Be Used On Freshwater Pond Fish And Plants. Calculate Pond Gallons Using Following Formula: Length (Ft.) X Width (Ft.) X Average Depth (Ft.) = Cubic Feet. Cubic Feet X 7.5 = Pond Gallons. Remove Activated Carbon Filters For 6-8 Hours After Dosing.