The Zoo-Med Paludarium Heater 25w is specifically designed for smaller paludariums and aquatic habitats, accommodating up to 7 gallons of water. This heater is fully submersible and features a digital temperature display for easy monitoring. It includes an auto shut-off function for safety when removed from water. The heater can be easily attached to the inside wall of the tank with suction cups and programmed to heat water within the range of 68-93°F (20-34°C), ensuring the optimal temperature for various aquatic and semi-aquatic pets.