Unique in-pond biological filter supplements existing biological filtrationIncreases surface area to cultivate large populations of beneficial bacteriaHelps process excess nutrients and maintain pond water clarityUnique in-pond biological filtration delivers vast amounts of surface area in a compact, natural form. Helps process excess nutrients and maintain water clarity. Also provides valuable habitat and food source for fish and other pond inhabitants. Constructed of environmentally friendly food grade polymers. Weighted to stay in place.Recommended use: 1 Mini per 50 gallons, 16-1/2" x 12" high; 1 Standard per 1000 gallons, 6-1/2 ft x 22" high.Please click on "More Information" for helpful tips.

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