Effective biochemical filtration
hygger Betta Fish Tank Filter is 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 the colonization of nitrifying bacteria and accelerated circulation, it can also absorb fine particles to achieve the effect of purifying water.
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 for your betta fish tank.
Energy saving without noise
Instead of using a power device, this tank sponge filter uses the air pump as the driving force. So there is no noise during operation. The sponge filter’s outlet pipe can be adjusted so that you can change the direction and height of the water flow.
Replaceable filter media
The filter comes with two kinds of filter materials: Filter sponge (including 2 spares) 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. You can easily remove the sponges from the filter for cleaning or replacement.
Directions for Use
1. Squeeze the fish tank sponge filter into the water tank for 5 minutes on the first use, which makes it easy to digest and form bacterial colonies.
2. Use the water in the aquarium when washing the sponge, until you see no more dirty water in the sponge. Do not rinse the sponge with a tap or hot water.
3. It is recommended to replace the sponge and bioceramic ball every 6-8 months.
The medium sponge filter is 6.3 inches in width and 9 to 13 inches in height. The sponge inside circle diameter is 0.59 inch, and it is suggested for a 15 to 55 gallons fish tank. For a larger tank, you may need 2 or more of them.
I have this sponge filter in my small Dovii’s tank and it keeps the water clear as a bell. See pics to see what it looks like in the tank.