We have Liff off for scale
Scale build-UP is the result of hard water. It is apparent from furring on kettles, shower heads and other appliances, but it can also cause scale build up on the inside of pipes and boilers which reduces their efficiency.
The Combi-Flo from Liff Industries can be used for a whole building or for protection for a specific range of appliances. The product slowly dissolves into the water stream and coats the metal parts in contact with the water with a thin film, which inhibits the build up of scale.
Liff Industries