Feature:1. [Durable Construction]‑Aquarium heater uses high quality NI CR heating wire, which is stable and power saving, durable and not affected by magnetism, faster heating speed, explosion proof, plastic shell can well guard the quartz tube and prevent fish from being scalded.2. [LED Temperature Display]‑Fish tank water heater HD LED control display, real time monitoring of fish tank status, 20 ℃ to 34 ℃ (68℉ to 93.2℉) cycle temperature control, convenient and fast. Note: The controller is not waterproof, please keep it away from water.3. [800W Fast Heating]‑When the heating rod starts to work, the machine instantly heats with 800W high power, until it is close to the set temperature, it starts to maintain a constant temperature with low power, which saves energy and saves electricity.4. [Working Status]-When out of the water, LED screen will display L1, with a flashing reminder and stop working, built in smart sensor, if it can't detect the water will turn off; when the heating rod is in working state, the red light will be on; When stopped, the blue light turns on.5. [Simple Installation and Easy Operation]‑This 800W aquarium heating rod is suitable for below 400L (106 gallons) water volume and below 47.2in fish tank. Fish tank heating rod is applied for aquaculture, glass containers, and hydroponic systems.Specification:Item Type: Aquarium Heater Material: Plastic, Quartz GlassApplication: Heating Water in Aquarium Fish TankSuitable Water Volume: Below 400L / 106 gallonsSuitable for Fish Tank Size: Below 120cm / 47.2inHow to Use:1. When the power is off, put the heating rod into the water, completely immerse the whole body in the water, plug in the power supply, and set the temperature.2. Place the heating rod as much as possible in the position where the water circulates, so that the heat circulates into the water in the tank.3. It is forbidden to insert the heating rod into