Mount the WaterSaver in the toilet’s cistern without use of tools.
Fill the WaterSaver with regular water and place it under tension between the front and the rear wall of the cistern.
The WaterSaver will save you 1 ltr. water every time you flush the toilet. It works quite independent of drive system and floater.
AND HOW MANY LITERS OF WATER CAN YOU SAVE? – I don’t know, but you do
1 liter of water x 365 days a year x 7 times flush a day =
2.555 liters of water per person per year!!!