Pawfly Aquarium Bio Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Fish Tank up to 30 Gallons, 3 Pack

Fine Sponge Filtration: It provides mechanical and biological filtration and traps debris or wastes without sucking up your fish, keeping a crystal clear water tank.. Medium Size: It measures 2.7"" D x 6.3"" H. Fit for tanks up to 30 gallons. Suitable for the breeding and feeding of various ornamental fish, shrimp or fry.. Easy to Clean: The filter can be easily detached for cleaning the dirt. Rinse it every 2 -4 weeks with aquarium water ONLY. Avoid washing it in tap water!. Quiet Aeration: Air powered and causing no disturbance to your daily life. Do squeeze the sponge in the water to remove all trapped air and make the filter sink to the bottom.. Air Pump Not Included: You need an extra air pump to run the filter, which processes external air to promote oxygen circulation, providing a healthier tank environment.