hygger Aquarium Heater, 100W/200W/300W/500W/800W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off Fish Heater with Digital Controller for Freshwater and Saltwater

【Rapid Heating System】 The hygger aquarium heater HG079 is made of the most stable nickel-chromium heating wire, which can quickly and stably transfer heat to the surroundings, making water heating faster and more durable. It has a built-in dual temperature control system of Fahrenheit and Celsius, you can long press the controller's setting button for 2-3 seconds to switch

【Temperature Alarm and Auto Shut-off】This aquarium heater has a intelligent temperature and water sensor system, when the heater is out of water, the water tempe. exceeds 93℉, or the water temp. is below the 59℉, the heater will automatically stop heating (continues heating when the temp. is below 59℉), and the controller will display error codes and sound an alarm. Error codes: HH - overheating, LL - low temperature, L1 - heater out of the water. Multiple protections for fish safety

【Accurate External Digital Controller】Our aquarium heater is equipped with a super clear digital LCD controller (higher resolution than LED), which displays the current water temp., the set temp. , The heating status, and the warning of ultra-low/high temperature/auto shut-off, so that you can easily know the temperature changes in the aquarium. 10 ft long cable and external controller can easily set the temperature. Temperature adjustment range: 59-93°F. Accuracy: ±0.1°F. Very easy to operate!

【Explosion-proof Quartz Glass Aquarium Heater】This fish tank heater is made of thickened high-temperature resistant quartz glass material with explosion-proof quartz sand, which has a good sealing performance to prevent water from entering, making it a more fish-friendly heater. The heater guard is made of high quality PC plastic to protect your fish from burns

【Wide Range of Use and Warranty】The 800 watt adjustable aquarium heater is suitable for 130-260 gallon tanks. It can be used in fish markets, fish tanks, aquariums, fish ponds and other places where aquatic life is kept. It comes with three suction cups, a controller bracket and a hook. Please check the product carefully before use, we provide 12 months warranty for this product.