Cliffy38
Free Member
have noticed that both the kitchen and bathroom sinks have become slow draining. It is more noticeable if you have the drain tap open. First try was to clear the kitchen sink drain. I noticed a small hole towards the top of the tank which I assume is required to stop a vacuum. Pushed something through the hole and no resistance so assume it isn't blocked. Next attempt will be to remove all pipes to tank, flush them out and the tank. However any advice before I do this would be appreciated.