Hygger ETL Certification Aquarium Heater 300W - HG998-300W

Hygger submersible aquarium heater with adjustment knob can be used for small betta coral tanks, suitable for both saltwater and freshwater, it is designed especially for 15-80 gallon fish tanks. Key Features: 1. Set Included: • 1x Aquarium Heater, • 1x Sucker, • 1x User Manual 2. ETL Certification Aquarium Heater with double-protected for 30 Gallon fish tank. 3. Hygger has been unremitting in the pursuit of new technology and superior product quality. They have a wide range of aquarium products including but not limited to aquarium lights, water pumps, fish tanks, internal filters, canister filters, air pumps, aquarium heaters, aquarium plastic plants, fish tank decorations, air stone, gravel cleaner, filter brush, bio-ball, sponge filter and so on. 4. Double-protected and has passed UL certification 5. A safety fuse is installed inside 6. If the heater is out of the water for more than 3 minutes the fuse will be automatically disconnected 7. Set temperature from 68-93 degrees Fahrenheit to maintain constant and stable temperatures 8. The exactness is within 2 degrees Fahrenheit 9. Fully submersible water heater 10. Includes two suction cups for mounting horizontally or vertically 11. There is a built-in thermometer in the aquarium heater to detect the water temperature 12. No separate thermometer is needed 13. This 998 aquarium heater tube is made from heat-resistant glass, which is up to 2mm Explosion-proof glass 14. Can be used in fresh and saltwater aquariums 15. Service life can be 3 years or more 16. Use white alundum sand as the heat-conducting media 17. Must be fully submerged in water when working 18. Place near the water intake or the way where water flows 19. The heater will automatically shut off once the water temperature is over 93 degrees Fah...