uxcell Underwater Oxygen Aquarium Bio Stone Sponge Filter Media for 5-10 GAL Fish Tank</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Color: Black， White; Package Content: 1 x Aquarium Sponge Filter; Material: Plastic，Sponge， Stone</li><li>Net Weight: 52g; Usage Range: Fit for 5-10 Gallons Fish Tank</li><li>Sponge filters provide both mechanical and biological filtration， working perfect getting your fish tank water super clean and clear.</li><li>This sponge filter with stones inside， the air can easily dissolves in water， enhance the oxygen to release better.</li><li>Easy to install， ideal for shrimp tanks， crayfish， fry， fish or breeder aquariums.</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31FAFwaZk6L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31bzYJhXpZL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41vHkTdnuBL.jpg' noproxy></br>