🐠【500W Fast Heating】Our 500W Aquarium Heater is made of high quality quartz tubes and high temperature resistant nickel-chromium heating wire with excellent thermal conductivity, which can provide fast and stable heating, more energy-saving and efficient. The temperature adjustment range is 15-34℃, which greatly meets the temperature demand of different ornamental fish. Equipped with powerful suction cups, suitable for 250L-500L tropical fish tanks, aquarium tanks, betta fish tanks, turtle tanks and so on. 🐠【LED Digital Display & Precise Temperature Control】The aquarium heater is equipped with a LED digital display, so you can clearly see the real-time water temperature even in the dark. No need for an extra thermometer. With an external temperature controller, it is convenient to adjust the temperature without putting your hand in the fish tank water to avoid being burned by the heater, very safe. It supports Fahrenheit and Celsius readings, which can be switched by pressing and holding the setting button for 3-5s. 🐠【Intelligent Constant Temperature】This aquarium heater has an intelligent constant temp system to ensure consistent water temperature. When the heater reaches the set temp , it will automatically stop heating; when the water temp is lower than the set temperature, the heater will automatically heat up. The gradual increase in temp prevents the fish from being uncomfortable due to rapid temp changes, providing a stable environment for your aquatic pets while saving energy. Your pets will no longer be fear of cold winter. 🐠【Anti-Dry Burn Protection & Over Temperature Protection】Our updated aquarium heaters have added self-protection features over regular heaters. When the heater is not fully immersed in the water or there is a dry burn, it will automatically shut off; when the water temperature exceeds 34℃ (93℉), the heater will automatically turn off the power to ensure maximum safety for you and your aquatic creatures, just as we do for our own safety. Provide the best habitat for your cherished betta fish. 🐠【Explosion Proof Quartz Glass】This aquarium heater is made of explosion-proof quartz glass material, which is high temperature resistant, shatterproof and long-lasting. Sturdy protective cover made of high temperature resistant ABS material can protect your beloved fish from scalding, removable design is easy to clean. NOTE: Before turning on the power, please make sure the heater is fully immersed in water and install it near the water flow area to prevent uneven heating. 🐠【Widely Used】This 500W aquarium heater is versatile, suitable for both freshwater and saltwater, can accommodate a wide range of aquatic life. Ideal for tropical fish, neon tetra, guppy, angelfish, goldfish, prati, betta fish and sea turtles, they can also be used for heating pet drinking water, assisting with plant hydroponics and various other heating requirements. They are also suitable for fish tanks, aquariums and small fish ponds where aquatic life is kept.