HKM-580243 Electric Fish Tank Sand Washing Pump with Built-in Filter and 90-Degree Corner Cleaning DesignIntroducing the HKM 580243 Electric Fish Tank Sand Washing Pump, a practical solution for maintaining the cleanliness of your aquatic environment. Designed with your fish and tank in mind, this innovative pump features a built in independent filter, ensuring that unwanted debris like sand and fish are effectively prevented from being inhaled during the cleaning process. The unique 90 degree corner cleaning design of the sand washing head is