Marina Betta Heater is a submersible heater that creates ideal water conditions for bettas to thrive in. The exterior is made of durable polymer, which is more resilient than traditional glass sleeve heaters. The heater is designed for no manual adjustments. It has a red indicator light that illuminates when the heater is working. It comes with a suction cup, so you can easily install it against the aquarium window, for aquariums up to 5 litres (1.5 US Gal).

Key Features:

• Submersible aquarium heater
• Creates ideal conditions for bettas to thrive in
• Made of durable polymer, tougher than glass
• Easy to install using suction cups
• For aquariums up to 5 litres (1.5 US Gal)
• 8 Watts