WATER SOFTENER SALT Tablet Salt £90.00 – £129.00 Block Salt For Water Softeners £84.00 – £114.00 Water Hardness Kit £6.50 Replacement Aqa Nano filter £70.52 Replacement E1 filter for Aqa Nano system £60.62 YOU MAY ALSO BE INTERESTED IN … Block Salt For Water Softeners £84.00 – £114.00 Tablet Salt £90.00 – £129.00 Replacement Aqa Nano filter £70.52 Replacement E1 filter for Aqa Nano system £60.62