Oasirep 300W Titanium Aquarium Heater with LED Digital Display & External Controller – Submersible Fish Tank Heater, Precise ±1.8℉, IP68 Waterproof, for 30-65 Gallon Freshwater & Saltwater Tanks — Open-Box, 33% Off

【Precise Temperature Control】 Featuring a proprietary "Oasirep IC" chip, the 300-watt aquarium heater keeps water temperature accurate (±1.8℉ / ±1℃) and allows you to set a target temperature from 68℉–93℉ / 20℃–34℃, with a 3s long press to switch between Fahrenheit and Celsius. Perfect for 30-65 gallon fish tanks.

【Safe & Auto Shut-Off】 Featuring a high-precision water level sensor, the heater for fish tank automatically shuts off when water drops below the sensor line (E1 alert), preventing dry burn and protecting your fish. Always keep the heater fully submerged during use.

【Durable & Explosion-Proof Titanium】 Made from premium Grade 2 titanium with a Teflon coating, this submersible fish heater resists corrosion and impact, explosion-proof design for added safety, ensuring long-lasting performance in freshwater or saltwater tanks.

【Energy Efficient & Auto Heating】 Featuring smart temperature control, the heater for aquarium stops heating when the preset temperature is reached and automatically resumes when water drops 1.8℉ / 1℃ below, ensuring energy-efficient operation. Clear LED display shows water temperature at a glance.

【Controller & Indicator Guide】 External controller with a "SET" button lets you cycle through temperature settings. After selecting, wait 5s for confirmation, then display shows real-time water temperature. Red light = heating, blue light = reach the set temperature. Built-in over-temperature protection stops heating above 98℉ / 35℃ (E2 alert).

【Complete Package & Cord Length】 300-watt adjustable aquarium heater ×1, suction cups ×2, user manual ×1. Power cord length: 5.25-ft (1.6 m) for flexible placement.

【Safety Notice】 When removing the heater from the aquarium, do not touch the heating tube. Place it carefully on a stable, non-contact surface to prevent burns.

Keep your aquarium perfect with the Oasirep 300W Titanium Aquarium Heater – ideal for 30–65 gallon freshwater or saltwater tanks, including betta, goldfish, guppies, turtles, and small tropical fish. Enjoy precise temperature control (±1.8℉ / ±1℃) and effortless monitoring with the LED display: red = heating, blue = target reached. Made from durable, corrosion-resistant Grade 2 titanium with Teflon coating, this submersible heater is explosion-proof and built to last. Smart auto-heating stops when the set temperature is reached and resumes as needed, saving energy. Safety first: built-in water level sensor prevents dry burn, and over-temperature protection keeps water below 98℉ / 35℃. Includes heater, suction cups x 2, and user manual. 5.25-ft (1.6 m) power cord allows flexible placement. Reliable, safe, and energy-efficient – Oasirep keeps your betta, goldfish, guppies, and turtles healthy while maintaining a stable, stress-free aquarium environment.