The HW-5000 is the newest canister filter from SunSun (2019). The HW-5000 features a removable DC pump with SINE wave technology— more energy efficient than regular canister pumps. Includes a Smart Digital Controller that allows users to adjust the water flow rate and UV sterilizer's "ON" time. The ceramic impeller is more durable and can be used with freshwater and saltwater aquariums. The HW-5000 also includes 3 media baskets that are easy to clean. Big media baskets provide users the ability to add large amount of different filter media (not included). An adjustable tube holder can be mount on the aquarium with a 7/8" rim and can be remove for aquarium with larger rim. Bottom drain hole with valve allow for easy maintenance of canister. Easy to start, no priming necessary, simply add water and turn on the power. Pump Wattage: 50W. Max head height: 4M (13Feet). Max Flow Rate: 1200GPH (4600L/H). Dimension: 15"x15"x21. 7" (38x38x55CM). Please notice all canister filters go through water pressurize test before boxing by the manufacture to ensure there are no leaking. There maybe condensation still trap inside the filters. Please be assured the filter you receive is brand new and unused.