2 good versions of this heater:
7.5W - Good for up to a 5 gal. tank
15W - Good for up to a 10 gal. tank
- Efficiently warms water up to 6 degrees above ambient room temperature
- Completely submersible
- Quick and easy installation
- Suction cups mount to the bottom or side wall of tank
Details: The Aqueon Flat Heaters are designed to provide warmth for tropical fish being kept in 3G – 10G tanks. They come in two sizes – 7.5W and 15W – are completely submersible and will efficiently warm aquarium water up to 6 degrees above room temperature. Each is equipped with 6ft cord with cord suction cup and can be mounted to the walls or bottom of the aquarium.