I use a big aluminium pot to boil water. I think the water contains iron because after 4-6 months, the inside of the pot is full of brown stains. The colour is just like ferric. There are lots of circular brown areas (1-4mm diameter) in the pot.
- Is this stain caused by the iron in the water? If not, what is the cause?
- How can I remove these stains?
- Can I do anything to prevent these stains in the future?