FISH POOP SUCTION SPONGE FILTER

Oxyegenation Cycle: The airflow drives the water body to circulate up and down while also replenishing dissolved oxygenin the aquarium Cultivating Bacteria: Nitrifying bacteria attached to sponge pores. Physical Filtration: The sponge body intercept fish feces, food scraps and other impurities in the tank, achieving clean water absorption. Air pump required. NOT INCLUDED