Aqueon Adjustable PRO Aquarium Heater Up to 30 Gallons, 100 Watts

Adjustable heat setting 68 to 88°F, Electronic Thermostat accurate to +/- 1° Shatterproof and nearly indestructible Fully submersible; Auto Shut-Off when over-heats, resets when it cools down LED light is red when actively heating For fresh and saltwater aquariums Includes suction cups for installation and placement Recommended for aquariums up to 40 Gallons