Marina Betta Submersible Heater for Aquarium

The marina betta heater is an automatic, submersible heater that creates idealwater conditions for bettas to thrive in. the exterior is made of durablepolymer, which is more resilient than traditional glass sleeve heaters. theheater is designed to reach and maintain a set temperatureno manualadjustments required. it has a red indicator light that illuminates when theheater is working. it comes with a suction cup, so you can easily install itagainst the aquarium window.