WATER SAVING DEVICE. 3 MINUTE INSTALL. SO EASY!!! You can save money and water by installing this water-saving device on your toilet. This flow restrictor will allow you to balance the water filling your toilet tank and bowl which can result in saving thousands of gallons of water each year. Installing this device and balancing the flow should take less than ten minutes. This video will show you step by step exactly how to install this device and balance the water flowing to your toilet bowl and toilet tank.