Biological action - removes sludge by providing the beneficial bacteria needed to reduce the wastes naturally. Controls organic waste in ponds. 67.5 oz treats 10,125 gallons. Size is 67.5 Ounce. Dimensions are 9.5 X 3.5 X 4 Contains No Algaecides - 100 % Biodegradable. 100% Heterptrophic Bacteria. UPC Code = 015561208888