Keep your cold-blooded companion’s cave clean with the Zoo Med Turtle Clean 15 External Canister Reptile Terrarium Filter Media. This replacement filter for reptile tanks is made using high-quality carbon media. It is designed to help keep your dude safe by absorbing harmful ammonia that could cause health issues in your amigo. Claw-fect for your turtle， amphibian or fish habitat， this replacement carbon filter is crafted for superior absorption of waste products.