600W aquarium submersible heater for 75-150gallon large fish tanks. With an external temperature control box, it is easy to adjust the temperature and clearly displays the set temperature and the real-time temperature of the fish tank. Titanium alloy heating tube, can be used in fresh water or sea water. Titanium alloy heating material: This fish tank heater uses high-quality titanium alloy as the heating material, which has the advantages of anti-shattering, high temperature resistance and corrosion resistance. Therefore, it can be used in saltwater tanks and large fish tanks. Intelligent temperature control: This heater is equipped with an intelligent external temperature control device, which can accurately display the real-time temperature of the fish tank and the real-time power of the heater, and the temperature adjustment is also very convenient. The temperature adjustment range is 64-93℉. Sturdy cover: The protective cover of this aquarium heater with a simple design can effectively prevent fish from hitting and will not hurt your pets. The holes on the cover are evenly distributed and the heat dissipation is fast. It is recommended to wash the dirt with clean water regularly, but do not disassemble the cover. Accessories: We have equipped this fish heater with enough suction cups, as well as a 6ft extra-long power cord, a detailed instruction manual, and a sticker-type thermometer. We provide 1 year warranty for this heater. HITOP 600W Digital Submersible Aquarium Heater: Large Fish Tank Heater with Intelligent Temp Control Device, Titanium Aquarium Heater for Freshwater/seawater for 75-150Gal Tank