Crystalized salt on scales of my red tail

[cerelia]

Hello everyone,

As snakes don't have sweat glands, I'm confused how this happened. Last night, my red tail had what seemed like crystalized salt lines on her scales (upper third of her body in various places), very similar to a human. I did a quick taste test and it tasted exactly like salt.

I have always used filtered water, and never seen this before. The temp is a little higher for the last few dsys as she has a slight respiratory infection - I don't think this could have crystalized minerals out of the water but I'm not sure.

If anyone has any ideas or had seen this, Id love to hear.

Thank you very much!