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Hi, can anyone tell me is Fernox F3 inhibited while its left in the system for 7days in other words is the system rusting while it is in?. Also since the cleaners been in the vent over the fe tank has been venting a little surge of water on pump speed 2 only each time the pump is turned off...

i have a really strange problem with my glow worm hideaway 60 b boiler I hope someone can offer advice on. Since putting fernox f2 boiler silencer in to quell some minor kettling noise which was only moinir hissing on heating up rather than banging etc, now when the boiler has reached or is...