PF WaterWorks Toilet Water Conservation Kit - Toilet Tank Fill Cycle Diverter, Toilet Tank Optimizer Bag, Flapper Leak Detection Tablets (2); PF0568 Includes one Toilet Tank Optimizer Bag that reduces water used in each flush. Includes one Toilet Tank Diverter Valve that fills the tank faster and reduces the loss of water from the bowl. Includes four Leak Detect tablets that are used to detect leaks in the toilet tank.