Milky white spots on FL Ricordias -- is this a disease?!

[its fry]

I have a few FL rics that are now more than 1/2 white.
They are not bleached from what I know.
They are under PC's and came from a MH tank.

The bubbles (if you will) are gone in these parts, and they are now a flat milky white.

I think it has spread to a 3rd by touching it.


Anyone seen/heard of this?

 

[nUgZ]

If you can get a picture it would be nice.