SEAOURA Aquarium Heater, 200W Fish Tank Heater for 20-40 Gallon, Small Submersible Heater for Turtle Tank with Temp Probe Digital Display Adjustable Safety Protection, Automatic Power Off - size: Tank for 30-40 Gallon

About this item

• 【Dual safety protection】The SEAOURA aquarium heater automatically powers off and triggers an alarm when removed from water, preventing dry burning and potential dangers. It features adjustable over-temperature protection (personalized MAX and MIN temperature threshold). Multi-zone temperature probes ensure full water temperature detection (must be fully submerged)
• 【200W Heater Specifications】Fish tank heater provides stable and efficient heating for 20-40 gallon tanks. Dimensions: 9.5x1x0.87 inches. Power cord: 3.3 ft + 5.25 ft; sensor cord: 19.7 inches. Temperature range: 63–94°F (17–34°C). It can be easily hidden in aquascaping to meet different placement needs and keep the tank aesthetically pleasing
• 【Dual LED display & Easy Setup】Say goodbye to the vague indicator lights of traditional heating rods! The external smart controller is equipped with a high-definition dual digital display, showing real-time water temperature and set temperature. Recognize status by color: red means heating, white means heating completed. Easy for adults and kids to operate without reaching into the water
• 【0.1℉ Precision Temperature Control】Short press to adjust ±0.1°F/℃, long press for fast ±1°F/℃. Built-in high-sensitivity sensor monitors water temperature in real time for stable and accurate heating, creating a healthy environment for bettas, tropical fish, ornamental shrimp, turtles and aquatic plants, reducing stress from temperature fluctuations
• 【Intelligent Memory Function】No need to reset after a sudden power outage! Built-in smart memory chip automatically restores the last set temperature when powered on, saving you from repeated settings. Suitable for both beginners and experienced aquarium hobbyists
• 【Wide Application & Durable】This submersible aquarium heater is made of explosion-proof quartz with a sturdy heat-resistant ABS shell, preventing glass breakage and protecting fish from scalds or scratches. Shock-resistant, easy to clean and long-lasting. Ideal for freshwater tanks, saltwater tanks, turtle tanks, planted tanks, pet fountains and plant seedling propagation

Overview

• Package Dimensions ‏: ‎ 11.34 x 2.87 x 1.61 inches; 9.91 ounces
• Item model number ‏: ‎ SR-318-200W-DE
• Date First Available ‏: ‎ May 5, 2026
• Manufacturer ‏: ‎ SEAOURA
• ASIN ‏: ‎ B0GGZH5K9H
• Best Sellers Rank: #23,227 in Pet Supplies (See Top 100 in Pet Supplies) #36 in Aquarium Heaters
• Customer Reviews: 4.4 4.4 out of 5 stars (61)