- 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 always on: red when heating, green when not heating
- Limited Lifetime warranty
Details: Aqueon Pro Aquarium Heaters are built with a durable, non-corrosive shell for strength and even heat distribution. Each unit is equipped with electronic thermostats for accurate temperature settings and advanced gravity shutoff feature safety. The temperature settings are adjustable, LED power indicator illuminates red when the unit is actively heating. This 100W Pro Heater is for use in aquariums up to 40G and can be used for freshwater or saltwater aquarium; and can be positioned horizontally or vertically. Other wattage heaters are also available, 50W, 150W, 200W and 300W.