About This

• Porous Cotton Material combines mechanical and biochemical filtering effects that effectively capture debris and maintain water quality, as well as provides a large surface area for cultivating beneficial stuff
• Air-Drive Filter creates a gentle current suitable for breeding fry, shrimp, betta, guppy, and snail. It constantly supplies the oxygen for the fish tank and keeps the water moving without causing stress to delicate aquatic inhabitants
• The Weighted Base: Make the vertical filter easily sink to the tank bottom and keep in place. Please put the foam into the water tank and squeeze out the air until it’s full of water when first used
• Easy Use and Maintenance: The package comes with two sponges, and squeezed together with the filter; just remove one to restore the shape. No need to disassemble to rinse and wash the sponge with tank water
• Be Aware: it does not come with airline tubing and air pump. You need an extra air pump to power the sponge filter
• S-Dimension: 2.9"D X 3.3"H, Fit for 3 -30 gallons small and medium-sized aquarium, or as a pre-filter and auxiliary filter for large tanks