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.
![](https://fernox.com/wp-content/uploads/sites/5/2024/07/62234_Protector-Filter-Fluid-F9-500ml.jpg)
Protector+ Filter Fluid F9 500ml
Designed for use with Fernox TF1 in-line system filters or other similar filters, this unique inhibitor package includes an active
![](https://fernox.com/wp-content/uploads/sites/5/2024/07/62310_Protector-Filter-Fluid-F9-Express-400ml.jpg)
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