Aqueon Preset Aquarium Heaters require no adjusting! The preset temperature has been calibrated to 78°, appropriate for most tropical fish. It is fully submersible, constructed of shatter-resistant quartz glass and features an automatic safety shut-off to avoid overheating. The heaters include suction cups and can be placed vertically or horizontally within the aquarium. An LED indicator light displays red when actively heating. Available in different sizes to accommodate all aquarium sizes.

• Preset to 78°, accurate to /- 1°
• No adjustment required.
• Shatter resistant.
• Auto shut-off.
• LED light turns on when aquarium water is being heated.

Size: 50 Watts (for aquariums up to 20 gal.)