Yellowing Patches on Leaf

[Vpplaya]

Hello everyone, I was wondering if anyone could help me identify this yellowing one of my phal leaves is experiencing. This is my first orchid, and it has been very healthy up until now. The flowers have fallen and the spike is turning brown so I am getting ready to cut it off and re-pot. Yesterday I noticed that one of the big leaves has these yellow splotches forming on it, yet no other leaves do.

I have also noticed tiny clear insects in the soil but I believe that they are just springtails. Not too worried because I will be changing soil soon. I thought that it was a nutrient deficiency so I fertilized it but now I am not so sure. Any feedback would be extremely helpful, thank you.

[silken]

Welcome to Orchid Board.
It looks like sunburn to me. It is likely the leaf closest to the window. It won't go away but moving it out of hot sun will keep it from getting worse. These are quite low light plants. Keep an eye on it to make sure it doesn't expand or develop a fungal or bacterial infection. It should just dry up and stay the same.

[Vpplaya]

Ok that is very good to hear. I live in South Florida so even being near a window (it sits on a table in the middle of a room) might be too much sun.

I was worried I'd have to douse it in fungicide!

Oh, and thank you!

[silken]

Does direct sunlight shine onto the table? It sounds like a long way from a window, but it still looks like sunburn to me.

[Vpplaya]

The table gets fairly direct sun till about noon or 1, and then indirect the rest of the day

I will move it to a different room for a couple weeks to see if spots stop forming.

What worries me is that I have had it since February in more or less the same place but its only just becoming an issue now.

[silken]

It depends how the sun was coming in in winter. It's much warmer in summer (here anyways). But the sun is lower in winter and can be more direct. In your part of the world, I am not sure how it would change for that table in your home. Direct sunlight for half the day is too much for this plant. Phals don't want any direct sunlight. Mine grow well year round in a north facing window. If the leaf is warm at any time, it is too much sun.

[Vpplaya]

Ok, I will move it to a different location thank you for the advice.