Why You’ll Love It The hygger 253 precise aquarium heater is made of explosion-proof quartz glass. It is easy to set and monitor the water temperature accurately for sensitive aquatic species. Comes with precision warmth mode, energy-saving mode, and power-off memory function, it is ideal for 5-100 gallon saltwater and freshwater fish tanks. Key Features Precise Temperature Control The HG253 aquarium heater is accurate to 0.1°F and has a setting range of 59°F to 93°F, adjustable in 0.5°F increments, with a 7.23ft long power cord. It’s ideal for sensitive aquatic species such as betta, guppy, discus, shrimp, and turtle to maintain a stable environment. Safety Beep Alarm The precise heater comes with a warning alarm function when the heater malfunctions. It is designed with temperature probe fault, out-of-water fault, and overheat protection that enhance the security of use and avoid potential risks for tank inhabitants. Smart Heating System A precise aquarium heater is built with 2 temperature probes to detect water temperature in real-time. Once the target temperature is reached, the heaters enter standby and resume operation when the water temperature drops. You can choose precise warmth or ECO mode according to different needs. -Power-off Memory The digital controller remembers your settings in case of a power failure, which saves you time and energy. -Precision Warmth Mode The heater defaults to precise mode. After you set the target temperature, heating will be activated automatically when the temperature drops by 0.5°F (0.5°C) below the set temperature. -Energy-Saving Mode When ECO mode is on, the corresponding icon will appear on the display, and heating will be activated when the temperature drops by 1°F (1°C) below the set temperature. -Child Lock Protection You have to hold the button for 3 seconds before entering any change mode to prevent children/mistakenly touching. Slim Size & Space-Saving Heater This 50W-500W heater can be easily mounted in narrow sumps or fish tank corners. The explosion-proof tubular quartz glass heating element has no shell structure, no need to worry about fish getting trapped. More Convenient & Safer The external controller makes adjustments easy without getting your hands wet. The 2mm thick quartz tube combines corrosion-resistant nickel-chromium wire and magnesium powder as the heat-conducting medium, safer for tank inhabitants. Usage Tips Clean Regularly: Wipe the heater with a soft cloth every 2–4 weeks, prevent scale buildup and lower its efficiency. Check for Damage: Look for cracks or other damage. If you find any, replace the heater right away. Place: Make sure the heater rod does not touch the sand or gravel on the tank bottom. Prevent dry burning: The heater element must always be completely submerged, at least 2 inches underwater. Specification Package: 1 x Heater with a controller 2 x Suction cup 1 x User manual People Also Buy hygger Double Biochemical Sponge Filter Greater filtration area for 10-55 Gal10% OFF $12.99 – $24.99Price range: $12.99 through $24.99 Rated 5.00 out of 5 hygger Dual Pro Aquarium Air Pump 4-11W dual-outlets for tanks up to 600 Gal10% OFF $28.99 – $49.99Price range: $28.99 through $49.99 Rated 5.00 out of 5 Sold out hygger High Density Hole Aquarium Air Stone 2.6"-4.1" adjust air flow for higher oxygen10% OFF $12.99 – $18.99Price range: $12.99 through $18.99 Rated 5.00 out of 5 hygger Pro Timer Aquarium Light 15-50W 6 Day-L&4 Moon-L for 12"-52" tanks10% OFF $29.99 – $72.99Price range: $29.99 through $72.99 Rated 4.80 out of 5
