SPCIFICATIONS: Type of article: Fish raster heating rod Condition: 100% brand new MATRIEL: Stainless steel + ABS Color: Rose Type Length (cm / in) Temperature control range < / p> 50W 19/7,518-34 ¡to 100w 23/9,118-34 ¡to 200w 28 / 1118-34 ¡to 300W 32 / 12,618-34 ¡to 500W 37 / 14.618-34 ¡to 1. The indicator lights up to indicate that it heats. 2. When the heating rod operates, it is recommended to install a water circulation system to obtain a r balance of the aquarium temperature. 3. Do not use the heating rod in the sand, so as not to affect the control of the temperature. 4. Aquarium water plane calculation method (Aquarium length x Aquarium width x Water level height) cm = 1000x2 =? The result is the required power of the heating rod List of packages: 1 x Aquarium heater 2 x suction cup