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Many toilets will flush just as effectively with less water. By putting Hippos into your cisterns you can reduce the amount flushed away and for those on a metered supply this means a significant and sustained saving on water and your water bills.
Hippo is made from durable heavy gauge Polyethylene, which opens up, origami style, into an open ended box shape when installed. The Hippo happily sits in the water underneath the large cistern float. When the toilet is flushed, the water confined within the Hippo is the volume saved. The Hippo also has a small hole which acts as a relief valve allowing slow circulation of water to prevent stagnation and evaporation.
If your toilet was installed before 1991 it will be 9 litres in volume, or more. This type of toilet will work well with a Hippo fitted and will reduce the flush volume by up to 3 litres.
If your toilet was installed between 1992 to 2001, it will be 7.5 litres in volume. This type of toilet will also work well with a Hippo fitted and will reduce the flush volume by up to 2.5 litres.
If your toilet was installed after 2001, it will be 6 litres in volume (the current standard) and it should not be reduced further with any type of device whatsoever.
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