ST International Aquarium Low Water Level Filter Perfect for Turtle, Snake, Lizard and Fish Tanks

In this double filtration system, the activated carbon cleanses harmful substances and the beneficial bacteria housing cultivates healthy bacteria that help ecological balance. Gets rid of harmful gases and increases the amount of oxygen by taking advantage of water vapor effect. A minimum water level of 1.25 inch is required, however, this filter works with a variety of aquariums. Energy efficient, dramatically effective and quiet. Superior flow control. Super silent efficient water purification.