XINYOU XY-2892 Bio-Chemical Aquarium Sponge Filter
This filter allow you to cultivate nitrifying bacteria for superb biological filtration. Great for fry aquariums and brine shrimp hatcheries because they prevent young fry from being trapped in the filter media. Operates silently, creating numerous minute bubbles for increased oxygen flow. For aquariums up to 30 gallons. Filter requires an air pump and airline tubing, sold separately.
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