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The Fill Master toilet tank water saver is a product that saves 1/2 to 1-1/2 gallons of water every time you flush. It works by diverting some of the water that would normally flow down the toilet's overflow tube back into the toilet tank during the toilet's filling cycle. Maximize your toilet's efficiency with the Fill Master to prevent excess water from needlessly flowing down the drain.
Simply Conserve Fill Master Cycle Diverter - 2 Pack - B00AXFH1YU