Problems with water chamber

[Poppy56]

I've just had to ask my sleep clinic for a new water chamber. I was given 2 in April when I started to use a CPAP. Both now have horrible white lumpy deposits on the metal bottom and brown marks that look like scorch marks. I must admit that I have used tap water from time to time and once I used Milton without noticing that you're not supposed to use it on metal. Would either of these have caused the problems?

[gvader]

Hi Poppy,

The white lumpy bits will be limescale deposits that build up, just like in your kettle.

Best thing to do is clean the reservoir weekly by filling it with a white vinegar and water mixture (1 part vinegar to 3 parts water), leaving it to do it's thing for an hour and then rinsing thoroughly. Will come up lovely and shiny and ready for another week.

I boil my tapwater, let it cool down and then run it through a Brita filter and although I've only been using my humidifier since I bought my Sandman Auto at the end of May it is currently spotless