Reptology Life Science Turtle-pier by Penn-Plax Turtle Pier floats just above the water line of your aquarium which allows your pet to rest and eat outside of the water. It allows for more interaction and close up viewing of your favorite friend. Pier rests on 4 pylons that are attached with suction cups at the bottom of the tank. These supports can be adjusted as low as 3 inches for tanks without water or up to 16 inches for tanks with water. Easy docking ramp allows your turtle to easily climb to the upper level. Pier has a gravel bin to that is used to counterbalance the weight of your large turtle as they enter the ramp. Gravel sold separately. Turtle Pier can also be used in terrariums and other reptile habitats that dont have water. It provides a basking platform but also allows satisfies their natural instinct to hide and rest underneath. Reptile basking platform is designed for 20 gallon tank or larger. A pier measure 16 inches long by 11 inches wide and is perfect choice for frogs, newts, salamanders, and other small reptiles.