OK, it has been suggested I should add some X100 to my system. Question - do I simply crawl into the loft, lob it into the header tank and run the system and hope that it circulates? Or do I need to drain water out of the header, add the stuff etc? Or something else that I haven't thought of ...
Any tips? I'm new to this stuff as you can tell
Any tips? I'm new to this stuff as you can tell