Fine Sponge Filtration: The sponge filters provide mechanical and bio filtration and traps debris or waste without sucking up your fish, keeping a crystal clear water tank. Mini Sponge Filter: They measure 2" D x 4.8" H. Fit for 5 - 10 gallon small tank. Suitable for the breeding and feeding of various ornamental fish, shrimp or fish fry. Easy to Clean: Each sponge filter can be easily detached for cleaning the dirt. Rinse it every 2 - 4 weeks with aquarium water ONLY. Avoid washing it in tap water! Quiet Aeration: Air powered and causing no disturbance to your daily life. Press the aquarium sponge filter into the tank to fully absorb tank water to make it sink to the bottom. Air Pump Not Included: You need an extra air pump to run each filter, which processes external air to promote oxygen circulation, providing a healthier tank environment. Product description Pawfly specializes in all kinds of aquarium accessories such as air pump, air stone, sponge filter and fish net to set up your aquariums. Sponge Filter for Small tanks The sponge filter provides effective filtration and increases the oxygen level to ensure a clean tank environment. It features fine cleaning effect, quietness and easy maintenance. Fit for shrimp, fry and various ornamental fish like betta, discus, guppy, and goldfish. Small size of 2" D x 4.8" H Up to 10 gallon tank Easy to be cleaned Work quietly Make tank crystal clear Up to 10 Gallons Tiny size - 2 inches in diameter and 4.8 inches in height. Work great with 5 - 10 gallon small tanks and bowls. Easy to Clean Detachable design allows you to easily take it apart for cleaning or replacement. Keep Water Clear An ideal way to clear up debris to keep a crystal clear water tank. Soft Fine Sponge Premium sponge material traps floating debris without sucking up your fry or shrimp. Air Powered The air chamber produces tiny bubbles which increase the oxygen solubility of water. Air Pump Not Included. Clean with Tank Water Rinse and squeeze the sponge with aquarium water ONLY.