hygger Aquarium Sponge Filter, Fish Tank Filter, Submersible Internal Foam Aquarium Filter for 91-250L Breeding Fry Shrimp Snails Betta Tank with Filtered Ceramic Balls and Spare Sponge(M)

Product description

• 【Precision Double Filtration】hygger sponge filter consists of a circular cotton and a chamber base with bio-ceramic ball that provide both mechanical and biological filtration for your aquarium, which is suitable for low flow breeding like betta, guppy, shrimp, snail, fish fry.
• Or as a pre-filter for other filtration systems and also be used as an auxiliary filter for large tanks. 【Working Principle】This air-driven sponge filter is powered by an air pump that uses the water-lifting effect generated by rising bubbles and drives water flow through filter sponge, which can effectively adsorb excreta and residual bait to achieve the purpose of filtering and purifying water quality.(PS:AIR PUMP AND AIRLINE SOLD SEPARATELY) 【Filtration/ Culture/ Oxygenation】1Biochemical cotton has a high-density pores structure, which can more easily catch impurities and particles in water.
• 2 The filter chamber is equipped with bio ceramic balls that help break down waste and cultivate beneficial stuff.
• 3Built-in a small bubble stone at the bottom can effectively increase the dissolved oxygen content in the water and generate a lot of bubbles. 【Use & Maintain】1Our fish tank foam filter includes two sponges that take the spare sponge off and stay the other on filter before use.
• 2Filter container is easy to detachable and can be freely replaced with any other filter media as needed.
• 3Hook the filter up to air pump, and squeeze the sponge until it is full of water making it sink to the bottom of the tank.
• 4The sponge should be washed approximately every 2-4 weeks (use tank water rinse) to ensure the filter works properly. 【Three Size For Choice】Small: 7.3cmW x 11.2cmH, it works pretty well filtration for 5-91L small aquariums with under 40cm depth.
• Medium: 7.3cmW x 16.5cmH, suggested for 91-250L medium-sized aquariums with under 50cm depth. Large: 10cmW x 17.7cmH, suggested for 250-568L aquariums with under 67cm depth.