The Toilet Tank Bank is the easiest device to use to save water. Simply fill to top, snap to close and hang in toilet tank.
Save up to 2 liters per flush with no loss in performance. Fill this plastic bag with water and hang it in the toilet reservoir/tank. It will displace an amount of water equivalent to 2 liters, which means every flush will use less water.
Easy-to-fill, air lock and fill valve.
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