Removing massive mineral scale from crock pot used as humidifier?
Hi. We've used our crockpot as a makeshift humidifier but the inside of it quickly developed a hard, white mineral scale that no amount of cleaning attempt seems able to remove - and vinegar doesn't dent it.
We use r/o-filtered water from the drinking water part of our kitchen faucet apparatus and the whole house also has r/o and a salt-based softener out in the garage.
Decided to try the crock pot approach, which works great for us, after difficulty keeping a regular room humidifier operational (as you might imagine). We don't have easy access to distilled water without going out and buying jugs daily, so would like to keep using the crock pot with our filtered drinking water.