Specification: Item type: Fish Tank Heating Rod Condition: 1% brand new Material: stainless steel+ABS Color: As picture shown Options: 5W, 1W, 2W, 3W, 5W Type: 5W Length(cm/in): 19/7.5 Temperature control range: 18-34° Type: 1W Length(cm/in): 23/9.1 Temperature control range: 18-34° Type: 2W Length(cm/in): 28/11 Temperature control range: 18-34° Type: 3W Length(cm/in): 32/12.6 Temperature control range: 18-34° Type: 5W Length(cm/in): 37/14.6 Temperature control range: 18-34° 1. The indicator lights up to indicate that it is heating. 2. When the heating rod is working, it is recommended to install a water circulation system to achieve a better balance of the fish tank temperature. 3. Do not use the heating rod in the sand, so as not to affect the temperature control. 4. Calculation method of fish tank water body (Aquarium length x aquarium width x water level height) CM=1X2=? The result is the wattage of heating rod required Package List: 1 x Fish Tank Heating Rod 2 x Suction Cup