Reptology presents the Crystal-Falls Tiered Water Filtration System. This Filtration System is designed to filter and aerate water for Vivarium & Terrarium habitats occupied by Aquatic Turtles, Amphibians, Frogs, and Fish. In addition, the cover and ramp serve as basking surfaces, allowing for your pet to self-regulate their temperature. As for water level, the Minimum is 2” and the Maximum is 4.5”. Please Note: Aquatic Turtles, Amphibians, Frogs, and Fish not included. Inspired By Nature: Without compromising form over function, the Crystal-Falls Tiered Water Filtration System features a cascading waterfall that enhances the beauty of any habitat. Furthermore, this system is constructed from safe and durable resin that’s scratch resistant. Cascade 170 Internal Filter: Comes with a Cascade 170 Internal / Submersible Filter (Model# CIF4) that is slightly modified for the Crystal-Falls Tiered Water Filtration System. The filter is suited for 10 Gallon Aquariums, and pumps water at 45 Gallons per Hour. Versatile & Reliable: The Filtration System includes 2 replaceable Carbon Cartridges. While we offer a Two-Pack for replacements (Model# REP178), there is additional space inside for you to add your own filter media. Measurements: Overall – 7” (D) x 12” (L) x 6.5” (H); Lid / Basking Top – 5” x 5” Ramp – 8.5” x 4”; Waterfall Opening – 1” x 2”