Novique 25W Mini Aquarium Heater Submersible Constant Temperature Fish Tank Betta Heater Free Thermometer Sticker Suitable for 1-6 Gallons Saltwater and Freshwater Tanks

【25W Novique Aquarium Heater】: Still worried about your tropical fish looking listless due to fluctuations in water temperature? Don't worry, the Novique 25W Aquarium Heater is specially designed for small aquariums of 1-6 gallons, with a preset optimal water temperature of 78°F, automatic temperature control, and a sticker thermometer. Its compact design prioritizes safety and durability. Let your beloved fish swim vigorously around the clock and say goodbye to temperature fluctuations!

【Precise Temperature Control】: Novique Fish Tank Heater is preset to 78°F, the ideal water temperature for tropical fish such as betta fish, with an accuracy of ±3℉. The step-by-step heating technology means that when the water temperature falls below 78℉, the heater starts heating and the red light comes on. When the temperature reaches 78℉, it stops heating and the green light comes on. A sticker thermometer is included so you can see the water temperature changes at a glance.

【Compact and Compatible】: Mini body with a length of only 4.7 inches, it can be easily concealed in an aquarium without taking up extra space, perfectly suited for small fish tanks ranging from 1 to 6 gallons. Equipped with powerful suction cups for stable adhesion to the cylinder wall, it automatically starts running once powered on. 3.8 ft long power cord extends freely, whether in a small desktop tank or a corner ecosystem tank, bringing warmth and convenience within easy reach.

【Safe & Durable】: The heater shell is made of heat-resistant PC material that can withstand long-term high temperatures of 130°C (266°F). It will not deform even when the water temperature fluctuates frequently. The interior is equipped with nickel-chromium alloy heating wires that conduct heat evenly and are highly resistant to oxidation, ensuring a longer service life. The IPX8 fully sealed waterproof design prevents leaks, creating a safe, constant temperature environment for fish.

【Precautions and After-Sales Service】: When using, completely submerge in water and place in a water circulation area (a water pump is recommended). A covered fish tank will heat more efficiently. Before maintenance, disconnect the power and wait 10 minutes. Do not turn on the power when there is no water. We offer a 12-month warranty and 24-hour professional after-sales service. If you encounter any issues with the product, please contact us, and we will respond to your needs at any time.