Water Hardness in your area is: Soft to Moderately soft (0 to 100 mg/L)
You live in an area that contains low levels of hard water minerals within the mains water. Fernox recommends an Inhibitor is used to protect from corrosion and scale.
Protector+ Filter Fluid F9 Express 400ml
Designed for use with Fernox TF1 in-line system filters or other similar filters, this unique inhibitor package includes an active