Aquatop Sponge Filters are the go to choice for breeders and hatcheries.
Low maintenance, high-surface area. Use with air pumps or powerheads. Aquatop
sponge filters will tolerate high flow rates without clogging. Fast and easy
to clean. Suitable for aquariums up to 25 gallons.
Price is for one filter. Filter measures about 3.5 x 3.5 x 6-inches. Needs airline and an air pump or powerhead to operate; sold
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Aquatop Aquarium Sponge Filter 25 gallon