Aquarium Heater 200/300/500W with External Temperature Controller, Submersible Fish Tank Heater with Large LED Digital Dual Displays, Tank Heater Keep Stable Temp for Tropical Fish Betta Turtle, 500W

• 【Safety Protection Design】 : U-picks thermostatic aquarium heater adopts dual sensors for better protection, when the water temp is higher than the set temp, heater automatically stop heating. When the water temp is lower than the set temp, heater automatically start heating. Stepwise heating, the temperature gradually rises, which can prevent the temperature from changing too quickly to cause the fish to be uncomfortable.
• 【Thicker Exploson-Proof Quartz Glass 】: Using stable and reliable high-quality materials, 30% thicker than normal aquarium heaters, which is blast-proof. Protective Cover made of high temperature resistant material will not soften with high temperature, it can prevent your loved fish from scalding
• 【Dual LED Digitale Display】: With dual digital display windows, you can clearly see the water temp and set temp at the same time even in the dark. It is convenience to observe the temp change, higher security. With others' heater, you may need to take out the heater when adjust the temperature, which is easy to burn yourself. However, ours' external temp controller allows you adjust temp outside the fish tank, convenient and safe
• 【Heating Faster&Power Saving】: Unlike others, we u-picks aquarium heater use Quartz as heat transfer medium, which can conduct heat in less time, more power saving. Temperature adjustment range is 20-34 ℃, greatly meeting the temperature needs of different ornamental fish. 100W heater is suitable for 20-200L aquariums. NOTE: Please make sure that the heater is completely submerged in the water before turning on the power, and install it near the water flowing area to prevent uneven heating
• 【After-sales reply within 24 hours】: Our heaters are sealed with plastic packaging（Including controller and heating tube body part） to ensure that new products are provided to customers. If the anti-theft seals on the packaging are damaged, please contact us for a refund/replacement.

External controller: Our aquarium heater is adjusted by an external controller. You can use the included adhesive hook to stick the controller to the outside of the tank. It is convenient and safe to adjust the temperature. You don't have to take the heater out of the water and burn yourself. Dual Temperature Display: Accurate temperature display with dual LED digital screen, read the water temperature and adjust the temperature at the same time. You can see both the water temperature and the temperature very easily, even in the dark. This can help you observe the temperature change in real time. Intelligent Heating: With the built-in temperature sensor and constant temperature heating system, when the water temperature is lower than the set temperature, this fish heater starts working with red indicator and stops working until the water temperature reaches the set temperature with green indicator. It can always provide sufficient and uniform water temperature for your beloved fish. Tank Size: This 500W aquarium heater is suitable for 500L-400L aquariums both freshwater and saltwater. With our aquarium heater you can create a comfortable and safe environment for your fish.