About This

• Aquarium Heater for 20–40 Gallon Tanks：Ideal for freshwater and saltwater aquariums, this 200-watt submersible heater maintains stable water temperature in tanks up to 40 gallons. Perfect for betta fish, shrimp, turtles, and tropical fish. Includes 5.35 ft power cord for flexible placement.
• Energy-Efficient & Rapid Heating Design：heating element with silicon carbide heat conduction for fast, uniform warming. Designed to heat water quickly and maintain stable temperatures even after 72 hours of continuous operation, this energy-saving fish tank heater delivers reliable performance for tropical fish, bettas, shrimp, and turtle tanks.
• External Digital LED Controller with Clear Display：The external digital controller displays real-time water temperature in °F or °C (68–93°F / 20–34°C) via bright red LED digits. Mount it on the tank edge using the included bracket—adjust temperature without getting your hands wet.
• Smart Overheat & Dry-Run Protection：Equipped with intelligent sensors, the aquarium heater automatically shuts off if water temperature exceeds 93°F or if partially exposed (dry-run). Error codes E1 (low water) and E2 (overheat) appear on screen for instant alerts—ensuring maximum safety for your aquatic life.
• Easy Installation & Safe Use：Includes 3 strong suction cups and mounting bracket for secure installation on tank walls. Install vertically in fish tanks, horizontally in turtle tanks. Do not bury in substrate. Press and hold button 3 seconds to switch between °F/°C.