Hi All, Planning to chemically flush and fit a magnetic filter to my central heating system. Looking at a couple of brands for filter and chemicals. Our hosts own brand flow master range for the filter with sentinel chemicals or flow master chemicals. A fernox filter from a competitor, a full set of filter and chemicals by Adey (not heard of them) from the same competitor. I have also seen some chemicals by Corgi that seem extremely cheap but I assume they will be tat. Looking for a good combination of cleaner, inhibitor and 22mm filter for £125 or less. Thanks in advance for any advice.