Fully submersible, the Zoo Med Micro Clean 316 Submersible Turtle Filter is perfect for tanks up to 30 gallons. Two intake ports on the filter help prevent clogging from debris, and it comes with activated carbon and biological filter sponges. Help keep your turtle’s environment clean with these easy to change submersible filters. Product Dimensions: 3.7 x 4 x 5.8 inches. Let us know at MyTurtleStore.com if you have any questions about caring for your turtles and tortoises!