hygger Aquarium Heater with Upgrade Water Circulatio,Submersible Fish Tank Water Heater Digital Display,Auto Temperature Control for Freshwater Saltwater Safety Shut-Off Protection (500W,66~135Gal)

ENERGY EFFICIENT: The product consists of two parts: a heating tube and a water pump impeller. This all-in-one heater circulates water as it heats, distributing warmth evenly throughout your tank. It eliminates the need for a separate pump, reduces the number of devices, saving energy, space, and ensuring a consistent. The integrated design is more energy-efficient, lowering power consumption

AQUARIUM HEATING ELEMENT: The internal heating element is made of high-grade corrosion-resistant 840 stainless steel and high-temperature resistant nickel-chromium heating wire, combined with magnesium powder thermal conduction technology. This ensures long-term durability in both saltwater and freshwater, providing fast heating, safety, and longevity

WATER CIRCULATING: Both functions can be used independently. During warmer months, can turn off the heater and use only the water circulating to enhance water flow, promoting oxygen exchange, which benefits fish and plant health. It also reduces sediment buildup, keeping the environment clean

VERSION 2.0 UPGRADE: Upgrade the impeller water pump to enhance water flow performance.The water pump function increases water flow, forms a water circulation, preventing stagnant areas and improving water quality. Even heat distribution is achieved as the water flow helps disperse heat, avoiding localized overheating

QUIET UPGRADED DESIGN: This enhanced hygger aquarium heater now operates significantly quieter. A thicker casing blocks internal motor noise, softer larger suction cups reduce tank vibration. And increased water pump lifespan, changed internal materials

EXTERNAL CONTROLLER PRECISE TEMPERATURE CONTROL: Features a clear 3-digit LED display that shows real-time and set temperatures, making it easy to adjust and monitor water temperature. Ideal for freshwater and saltwater fish, ensuring the water temperature remains stable within the set range

MULTIPLE SAFETY PROTECTIONS: Equipped with low-temperature warning, overheat protection, motor stuck reversed protection, and dry-run protection. These features ensure the device automatically stops operating in abnormal conditions, guaranteeing safety

EASY INSTALLATION & OPERATION: The heater has a simple design with suction cups for easy installation. The external controller and clear LED display make operation intuitive and user-friendly. Three-pin plug, prevent electric leakage and electric shock. Hold down the right PUMP button to switch between ℃ and ℉