Highly effective water renewal and waste removal This siphon pump provides quick, efficient water exchange while helping remove fish waste from gravel and sand, supporting a healthier aquarium with less maintenance. Gentle, adjustable flow The built in flow control lets you set the water rate to suit your tank. Changes are gentle and precise, reducing stress on your fish. Easy operation Start circulating water by connecting the hose and nozzle, then pump the ball a few times for a hassle free maintenance routine. Durable, easy to clean Made with a reinforced hose and thickened siphon ball for robust performance. The removable design allows you to clean the pump and the tank without hassle. Use scenarios - Regular partial water changes in freshwater tanks with gravel or sand beds. - Substrate cleaning to remove settled waste while keeping water flow controlled. - Quick water changes in tanks with delicate or slow moving fish where gentle handling is important. Key attributes - Function: efficient water exchange and waste removal from substrate - Material: reinforced hose, thickened siphon ball - Design: removable for easy cleaning - Performance: adjustable flow control for gentle, precise changes - Operation: simple setup by connecting hose and nozzle and pumping the ball