Hello,
Whilst in the loft I noticed that the water in the CH header tank was murky and foul smelling. There was also something orange on the water line: either a deposit or a fungus?
I'm pretty sure it's not supposed to be like this! I put a bottle of Sentinel inhibitor into the tank when I moved in, so I thought I would have been protected? What should I do: should I drain down and refill and use two bottles next time? What is the orange likely to be? Surely copper compounds are usually green or black? I'm thinking iron compounds are orange: oh oh!
Thanks.