Huijukon Air Pump - High-performance biochemical sponge filter for aquariums,

Sponge filters offer both biological and mechanical filtration: they provide an ideal surface for bacteria to attach, and the sponge traps larger dirt particles, resulting in clean water that is safe for fish larvae.

Double filter sponge: biological filtration is rapid and oxygen levels are increased.

Ideal filtration thanks to a combination of mechanical and bioactive processes.

High-quality foam with a large surface area ensures no dissolution in the water and no toxicity.

The foam's open-pore structure is maintained even after prolonged use.