Fernox Cleaner F3 should ideally circulate through the system for at least one hour, or up to a week. Afterward, it should be drained, and the system flushed and cleaned before adding Fernox Protector F1 or Protector + Filter Fluid, together with a Fernox TF1 Filter, to protect the system from further corrosion and scale formation.
Does the Express Inhibitor Test check for all inhibitors?
Yes! the Express Inhibitor Test is a universal test that will check for the presence of all molybdate based inhibitors within the system water.



















