cooler water pump DB series submersible water pump with CE and Rohs certificate.Use in the following field:Aquarium , cooler water pump POWER CONSUMPTION(W)25WFLOW ... following this warranty.1,Please keep the water is clean2,Cleaning the water pump every week. Do not mover the shaft ... Use in the water 3, Don't catch the pump by cable4, Pump work water temperature below 45°C5, Keep the water is clean