The TetraFauna Floating Turtle Island provides a unique basking area for your turtle. As the platform automatically adjusts to the water levels in your tank, your aquatic turtle will always have the perfect area to bask. Included with the basking surface is an easy to read thermometer, which enables you to provide the perfect temperature for your turtle or tortoise. A submerged ramp is attached to the floating platform and is anchored to a weighted base. This ensures your turtle can easily access the dry area. The Turtle Island can be used with all standard 20, 29, 40, and 55 gallon aquariums.