Zygopetalum with many dark spots. Please help

[Kaibiesaur]

I have a zygopetalum that I've had for about 5 months now. It was doing great, and even gave me an extra shoot two months after buying. Winter has come and suddenly it is riddled with brown spots all over the leaves. My apartment has been extra dry due to heating implements, but I've got a humidifier to help with that. If anyone can help me figure out what's wrong, I'd be extremely grateful. This is my first zygo, and probably my favorite flower ever. I will attach some pictures of the leaves, as well as the pseudobulbs.

I'

[Dollythehun]

I hate to hear bad news: Mine has excellent ventilation, great conditions and the old leaves at almost black. I spray it regularly with a mild fungicide. It's unfortunately common to zygos.

[Clawhammer]

They seem to get these spots when they are unhappy. I recently put 2 through a S/H conversion and they had these spots until they grew new roots and settled in. Good news is it is not some contagious disease, and despite the spot, both of my zygos still bloomed.

[Dollythehun]

Agreed Clawhammer, mine grow and bloom like crazy. Nice foliage would be a bonus.