Aquarium Heater 200-Watt - Submersible Fish Tank Heater for Small & Medium Aquarium Tanks by Pet Magasin Power: 200-watt; Tank capacity: up to 55-gallon Heater temperature range: 68F (20C) - 93F (34C) Easy to adjust to desirable temperature with the knob and read the temperature on the panel Fully Submersible - can get stuck to the aquarium glass with the suction cups come with the heater Short Power Cord, extension power cord will be needed