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AIR-POWERED AQUARIUM SPONGE FILTER: This aquarium filter is air-powered, you need to connect an air pump to drive it to work. Note: Air pump and air hose are not included, please prepare them by yourself.
EFFECTIVE FILTRATION TO KEEP AQUARIUM WATER CLEAR: AQQA aquarium sponge filter combines mechanical filtration and biological filtration, the soft sponge traps floating debris and provides mechanical filtration, while the bioceramic media ball helps to decompose harmful substances and cultivate beneficial nitrifying bacteria to provide biological filtration.
MULTIFUNCTIONAL AQUARIUM FILTER: The fish tank sponge filter combines filtration, aeration and water circulation in one, helping to keep your fish tank crystal clean and provide an excellent living environment for your aquarium inhabitants.
HEAVY DUTY BASE, WON'T FLOAT: The upgraded aquarium sponge filter features a heavy-duty base, so you don't have to worry about floating anymore!
WIDE APPLICATIONS: AQQA sponge filters are suitable for breeding fry tanks, shrimp and betta tanks, freshwater and saltwater aquariums. Small filters are available for 5-20 gallon tanks and medium filters are available for 20-110 gallon tanks.

About AQQA:
AQQA is a professional brand that is specializing in aquarium supplies. Your satisfaction is our goal, we are committed to give you the most sincere and thoughtful service. Hope you can have a great shopping experience here!
Size:
Small: 3.74*2.6inch; Suitable for 5-20 Gallon fish tank
Medium: 4.3*3.0inch; Suitable for 20-110 Gallon fish tank