Color as shown Size: 10 x 10 x 10 cm Weight: 100 g Function】 Provides biological filtration for; the aquarium, contributes to this; Stability quality some water. Increases oxygen solubility. 【Super Quiet】 Working without noise, good permeability, easy to clean. to clean. The super biochemical sponge filter features silent operation and excellent filtering effect while oxygenating the water. 【Perfect Filter】It can purify sundries and stabilize the quality. some water. Can cultivate beneficial bacteria beneficial to aquatic animals. This leads to a cleaner living environment for fish, especially useful as a breeding filter or as a secondary filter. 【Multi-layer sponge design】Multi-layer sponge design, can be cleaned one by one, the cylinder shift does not affect the quality. some water. The water supply was in dire need of oxygen.