Compact but still cool. Zensui ZR-mini Aquarium Cooler, For 3.9 gal (180 L), Suitable for both freshwater and saltwater. Features incredible cooling power, and is sufficient for up to 35.6 gal (180 L) of aquariums. (25° C), excluding heat loss loss) A sophisticated design with attention to design. It will match your rooms decor. Set Contents: Main unit x 1, Mini socket union x 2, O-ring x 4, Spare fuse x 1, Hose band x 2, Specifications: Power supply: AC 100 V, 50/60 Hz, Current consumption: 2.2 A, Power consumption: 140 - 160 W, Compressor Output: 75 W, Fan Thermo Output: 8 W, Calories: 180/2220 K. Cal/h Temperature Control: IC Electronic Control; Heater: Within 100 V/300 W; Refrigerant: R-134a (HFC-134a) Piping Connection: Mini Hose Fitting (Small: 0.5 inch (13 mm), Large: 0.6 inch (16 mm); Circulating Water Volume: 10 - 30 liters per minute (600 - 1,800000000 liters per hour); Temperature Settings per hour) degrees Celsius) Temperature Setting Unit : 33°F (1°C); Outdoor temperature range: within 88°F (35°C); Fuse: 10A Other key items; Pump: Separate required. Heater control: yes; Compatible hose diameter: 12/16, 16/22; Compatible water volume (when using standard): less than 68.6 gal (180 L) (when cooling to 25 degrees around 35 degrees Celsius); Compatible water volume (when using metahara): less than 60 liters; Recommended pump (*): Aheim 1250, Compact On 1000000000, Rio Plus 111111110000000, Rio Plus 1400 etc. If there is a large difference in height or if you are connecting something that is resistant such as sterilizer, we recommend using a pump with extra power. Size (approximate): Width 8.5 x Depth 10.4 x Height 15.9 inches (21.5 x 26.6 x 40.5 cm); Weight (approximate): 17