Phalaenopsis leaf "blisters"

[nayla]

Hello, I'm new to orchid board. I have a very small collection that I grow in an east facing bay window. Most of them are phalaenopsis/ dtps. I also have 1 oncidium and 1 miltoniopsis.
I was wondering if anyone has seen phalaenopsis leaves with blisters underneath. It looks like just clear fluid. They don't seem to be changing a whole lot. It has been very cold outside lately, so that may have something to do with it. I was wondering if it's edema. Maybe I'm watering too much during cold? I'm really not sure.
I'll try to post a picture, I hope it works.
Thank you so much!

[NYCorchidman]

Did it show up overnight?

They do look like edema, although I didn't know they pop up in a group like that. lol

If they are edema, the cause is watering the plant with cold water, not the cold weather.
The cold damage show up differently.

Try to water with room temp water, or bring the plant a bit in form the window if it is too cold.

[james mickelso]

Pseudomonas? Acidovorax? Watch them closely.

[nayla]

Thanks for the input! I'm not sure if it showed up suddenly. I just noticed it one day when I was cleaning the leaves. I usually water with room temperature water but I'll be extra cautious next time, just in case

---------- Post added at 01:24 PM ---------- Previous post was at 01:23 PM ----------

Thanks james, I'll keep a close watch.

[lepetitmartien]

I second edema, watch out in case while you watch out in the next weeks if it doen't spread and goes dry/necrotic, then only, suspect that something else is at bay.

[nayla]

Thank you lepetitmartien!