Aqua-T pond bacteria uses a revolutionary combination of specific strains of bacteria and bacterial enzymes that reduce sludge, control foul odors and digest excess nutrients which may cause problematic algae growth. These naturally occurring soil and water bacteria work to clean the entire water column and sludge layer by digesting organic wastes and contaminants. Aqua-T is environmentally friendly. It is NOT an algaecide or pesticide, and does not require a permit or license to apply it. It works in a range of temperatures and pH values. Aqua-T comes in a 25lb. Pail consisting of fifty 8 oz. water soluble packs.