Phalenopsis orchid leaves with black patches
 

Hello Orchid Pals,

I bought this orchid on clearance couple of days ago and it didnt seem to have any issue. Probably just one small black spot that I didnt think could turn out to be an issue. But now I see that it seems to be spreading and looks like some bacterial or fungal issue. Please suggest ways I can give the right treatment for it. Right now it sits on a window sill and house temperatures are around 70F and humidity 40%. One more thing to mention is it had decorative spanish moss at the top which could have contributed to more humidity. I removed the moss 3 days ago.

Pictures are attached.

Thanks,
Swetha

Those are probably damaged from scratches or pokes. What is the potting medium? Is it wet?

I agree. It seems to be mechanical damage. If they don't spread, then it's ok.

The potting media is bark but it did have some decorative spanish moss at the top. When I bought the orchid it had just one of those spots and I thought it was mechanical damage but now its spreading😭

One thing that always helps Phals. is to keep them warmer. Could you use a heating mat?

In my experience those spots seems to be mechanical damage but there are more possible causes (such as insect bites that may leave a mark that darkens as time passes).
I wouldn't worry too much unless they spread to the point of affecting the whole leaf.
To avoid any possible infection caused by water deposits, put it in a warmer place, as ES sugested.