Need experienced opinion asap - not familiar with the disease/fungus on my Cattleya

[POLKA]

Okay. I don't see anything resembling dehydration, but I see signs that it could have had some more magnesium in its diet. Check your fertilizer labels, and make sure it is there. If not, add a teaspoon of epsom salts per gallon water once a month when growing, and all subsequent growths will be a more even color. It might even help the older leaves to appear less mottled.

Take care
Rex
aka POLKA