Class NO.1 Energy Saving and Quiet No need to throw the temperature sensor into the aquarium; Temperature can be adjusted from 0 to 60 degrees Celsius (amount of cooling water varies depending on the temperature setting); Can be used in freshwater and saltwater; Comes with a heater outlet to manage the water temperature for all seasons. Water temperature monitoring alert function: Monitors water temperature abnormalities for 24 hours. The LCD display will notify you of changes in temperatures above ±2 degrees Celsius than the set temperature. ◆Overtime Function: The lamp will notify you of continuous operation for long periods of time that can cause failure. Cleaning time function: The lamp will notify you of unforgettable cleaning; 30° and 25° setting for coolant water volume of less than 200L 30 degree outside air and 15 degree setting for less than 70 L of coolant water Pump flow rate (min): 2.6 - 3.9 gal (7 - 15 L); For use with inner diameter 0.5 inch (12 mm) ho