Woliver Aquarium Heater, 100W 200W300W 500W Fish Tank Heater - Fast Heating Submersible Aquarium Heater with Extra LED Temperature Controller Suitable for 26-211 Gallon Marine Saltwater and Freshwater

• 🐠【Durable Explosion-proof Quartz Glass Aquarium Heater】:500W aquarium tank heater is desinged for 66-132 gallon tank. And the fish tank heater is high quality quartz glass material and it's protective sleeve, aquarium heater is shatter resistant & more durable than conventional glass heaters. 🐠【Temperature Range Scale】:Compact underwater analog submersible water heater can be adjusted between 57°F~93°F (±1°F). Maintain constant and stable temperatures for your aquatic creatures. 🐠【Safety Guarantee】:With anti-dry heating protection and overheating protection, when the water temperature exceeds 95℉, the controller will auto shut off and alert to prevent over heating,When the submersible heater is not completely immersed in water,the tank heater still will be shut off and led controller display will be come up "E1".Perfect to protect your fish and pets safe. 🐠【External Controller】: Our fish tank heater 500W is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe to adjust temperature, no need to take the heater out from water and no risk of burning yourself. 🐠【PLEASE NOTE:】 Uncontrollable weather may cause the heating tube to fail to heat up.Especially in winter, Affected by the outdoor environment and temperature, we cannot guarantee that the heating speed of the tank heater is the same as that of the indoor. And if the outdoor temperature changes greatly, the aquarium heater cannot be heated all at once, which may cause your fish freeze to face death outside due to not being heated in time.We don't recommend that you use it in outdoor pond.