Ideal for water quality problems in farm ponds and large ponds. One box treats 1/4 acre of problem pond for one month. 100% live bacteria, non-toxic, non-pathogenic, and beneficial for the environment. Use instead of copper products and pond dye to help the environment. Creates crystal clear water. Eliminates foul odors. Digests organic sludge. Eliminates scum and mats. Dimensions:. Length: 6.5. Height: 12.5. Width: 6.5