UPETTOOLS Mini Aquarium Sponge Filter, Small Fish Tank Filter Submersible Fish Filter Built-in Air Bubble Stone and Bio Balls for Fish Tanks up to 5 Gallon (Air Pump Not Included)

Biological Filtration: This small fish tank filter can help your fish tank provide oxygen, biological filtration, water purification, quiet and efficient filtration without disturbing your fish

Mini Filter: The aquarium sponge filter consists of filter sponge and filter stones as well as removable bubble stones. 2.68" W x 2.36" H. Fit for fish tanks up to 5 gallons. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish fry

Compact Design: Round compact design, small size, saving space in the fish tank, compatible with air pump wattage >1W. (Air pump and air tube are not included in the package). Please prepare an air pump suitable for this filter according to your fish tank size

Safe and Sturdy: The shell of UPETTOOLS aquarium bio sponge filter is made of high-strength ABS material, which is sturdy and durable, environmentally friendly, non-toxic and harmless, and has a longer service life

Easy to Clean: The bio sponge filter can be easily detached for cleaning. Rinse the sponge every 2 to 4 weeks with aquarium water. Replace the white sponge every 2-3 months