Our ensuite is on the South end of the house. We're in Blenheim so unchlorinated water (because it's so clean). The water pipe from the vanity grows moss, which makes the ensuite smell, well mossy. It only grows close to the plug hole.
Any tips for eradication?
I currently I control it with a combination of physical removal with a metal skewer followed by Draino. But it keeps coming back.