Hippo the Water Saver is the simple, proven and low cost water saving device to help conserve water in household toilet cisterns. Every time a toilet is flushed the Hippo saves approximately 3 litres of water. Hippos installed in the average home provide a saving on your metered bills of approximately £20 per annum, with a pay back on your initial investment within 8 - 12 weeks. 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. Will it fit my cistern? 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 3litres. 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.
Hippo the Water Saver Pack of 30 (not for slimline cisterns) - saves water each time you flush PACK OF 30 - B008OFOFUY