Effective biochemical filtration
Made from food grade materials, it is equipped with 4 environmentally-friendly filter sponges to filter impurities in water more effectively.
Cultivation of beneficial bacteria
The ribbed sponge has a large surface area, which facilitates colonization of nitrifying bacteria and accelerated circulation.
Improve dissolved oxygen
The combined use of air pumps can increase the oxygen level in the water, which would achieve oxygenation and dual biological filtration, and keep the water clean.
Energy saving without noise
Instead of using a power device, this filer uses the air pump as the driving force. So there is no noise during operation.
Replaceable filter media
The filter come with two kinds of filter materials: Filter cotton (including 2 spare) and filter box (including filter ceramic ball). Biochemical cotton can be cleaned or replaced. The filter cartridge media can be replaced with other media such as carbon and ammonia absorbent.
Directions for Use
1. Squeeze the sponge filter into the water tank for 5 minutes in the first use, which makes it easy to digest and form bacterial colonies.
2. Use the water in the aquarium when washing the sponge. Do not rinse the sponge with a tap or hot water until you see no more dirty water in the sponge.
3. It is recommended to replace the sponge and bioceramic ball every 6-8 months.
The medium sponge filter is 6.3 inches width and 9 to 13 inches height. The sponge inside circle diameter is 0.59 inch, and it is suggested for 15 to 55 gallons fish tank. For larger tank you may need 2 or more of this filter.