hygger ECO Precise Aquarium Submersible Heater, 50W for 5-100 Gallon Fish Tank Heater with Digital Display Adjustable Controller for Saltwater Freshwater

Safety Beep Alarm: Designed with temperature probe fault, out-of-water fault, and overheat protection to remind you to check your fish tank, enhance the security of use and avoid potential risks

Smart Heating System: Built-in 2 temp probes detect water temp in real-time. Once the target temperature is reached, the heaters enter standby and resume operation when the water temp drops. You can choose precise warmth or ECO mode according to different needs

Precise Temperature Control, accurate to 0.1°F, with a setting range from 59°F to 93°F, adjustable in 0.5°F increments. It's ideal for sensitive aquatic species such as betta, guppy, discus, shrimp, and turtle to maintain a stable environment

Slim Size & Save Space: This 50-watt heater is only 5.9" long (1.2" diameter), can be easily mounted in narrow sumps or corners. Explosion-proof tubular quartz glass heating element, no shell structure, no need to worry about fish getting trapped

More Convenient & Safer: This external controller makes adjustments easy without getting your hands wet. It also has a child lock to prevent accidental touch and a memory function that does not need to be reset after power outage

Compact 50W Aquarium Heater – Ideal for 5-10 gallon tanks. Its space-saving design hides easily, providing reliable heating for both freshwater and saltwater setups.