1. Controlled Water Circulation: Maximize your aquarium's water circulation with our precision regulating valve. The water control allows you to fully adjust and shut it off, providing greater control and flexibility. for maintaining a healthy water environment. 2. Wide CompatibilityThis aquarium water regulating valve comes in two sizes to meet your different hose diameter needs, including a 12mm valve for hoses with a 1.3cm inner diameter and a 16mm valve for hoses with a 16mm inner diameter. Achieving the water flow has never been easier. 3. Enhanced DurabilityOur aquarium water regulating valve is made of durable PP material, ensuring it is rustproof and corrosionresistant. Its polished surfaces make it comfortable to hold without hurting your hands. 4. Reliable UseEffortlessly maintain a healthy and clean aquarium with our water regulating valve. Simply close both valves and set the connection to the open position for easy filter cleaning. Separating the tank from the filter is no longer a hassle, saving you time and effort.