AMG68 water chiller adopts high-quality semiconductor cooling technology (TEC, Thermo Electric Cooler) with air cooled aluminum radiator, effectively ensuring low cooling and cooling efficiency to achieve the best cooling effect. The heat radiator end has built-in silent fan. AMG68's cooling rate for 2.5 Gallon water is approximately 1.0 ℃/hour (1.8 ℉/hour) depended on environmental temperature and heat load. AMG68 has no temperature control. This water chiller is suitable for safe use in freshwater and slightly salty seawater environments. It create a healthy and comfortable environment for fish, axolotl, shrimp, jellyfish, coral reefs in the hot summer. AMG68 can also be used as a small hydroponic Water Chiller. Technology: Semiconductor thermo electric cooling(TEC) Cooling water volume: 2.5 Gallon /9.5L Cooling effect: Cool down by 1.8℉/hour or 1.0℃/hour for 2.5 Gallon fresh water Water pump Flow: 200-300L/H Water Pipe: Inside diameter 8mm Voltage: DC 12V; Rated current: 7A Power Consumption: 84W Heat dissipation method: air cooling Noise of cooling fan: 58dB Product Dimensions: 109 * 125*86mm/4.29 * 4.92*3.39inch Material: Aluminum alloy and resin Weight: Approx. 401g without charger PACKAGE INCLUDED: 1.AMG68 water chiller 2.250L/H Water pump 3.Inside diameter 8mm Water pipe 4.DC 12V/7A Power adapter 5.User Manual Please make sure the water volume is less than 2.5 Gallon /9.5L especially in hot summer for better cooling effect. If the indoor temperature is too high, the recommended water volume is less than 2.5 Gallon /9.5L, the cooling effect will be greatly affected by the ambient temperature.