Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater, 12-in

Designed with safety and durability in mind, the Penn-Plax Cascade Heat 300W Preset Submersible Aquarium Heater accurately maintains the desired temperature in your tank within 1 degree of accuracy. The heater comes preset to 76 degrees, but it can be manually set to any temperature. It is fully submersible, and it can be placed horizontally or vertically with two suction cups for easy, secure placement in your tank. Plus, it’s easy to install—just plug it in and the heater will safely and efficiently bring the temperature of the water to your set level. Made with superior insulation and heavy-duty, shock-resistant glass, it provides even heat distribution over the entire element. It is safe to use in both freshwater and saltwater tanks up to 40 gallons in size. Keep your scaly sidekicks happy and healthy!