Drying out... that is causing this problem. Latouria Dendrobiums can get black leaves exactly like this when allowed to dry out for just a short period of time during the growing season. Try watering it so it never dries out. The old black spots will not go away, but new growth should form if the plant hasn't been damaged too much.

Interesting, thank you for this suggestion. Do you have images that show this so I can compare? Btw, you can see the plant in the OP, I had some images.

I water every morning, right when it dries out. I will give it some water midday to add moisture.

I think I do need to repot it and was planning on adding some spagh to the bark mix - mainly to help with retaining more moisture. The two new growth points are coming in well, so hopefully it isn't too unhappy...

Came here to say exactly this. I grow many Latourias and it took me a while to figure out how to keep the leaves spot free. The answer was always more moisture (apart from my one rootless one, but really, that’s the same problem. I wasn’t able to stay hydrated). I never even saw the point in treating the spots if they appear. If I fixed the moisture level, the spots stopped. If I didn’t, they would keep happening.

Nzadro, you can definitely put it in something that is more suitable for your conditions and will retain some moisture. As long as it drains well, and you have roots, you should be ok. You also mentioned that you just got it. It’s perfectly normal for this to happen, or start to happen, on transport. It’s stuck in a box with no air movement (not good, but unavoidable), and it’s dry (which they hate). It doesn’t help that it’s a tiny species either. Care for it well going forward and it should be fine

Here’s some pics of spots on one of mine. It’s a larger Latouria species, but they all do the same thing when they are unhappy about something (water, temps, air movement, ect..). The spots are like a canary in a coal mine, lol, and they pop up quick. This plant was one that I had moved indoors a few months ago, but it was still in my “outdoor” mix, and I wasn’t watering it frequently enough. Spots popped up, a few leaves dropped, and they stopped once I got it situated. The first two pics are a front and back. The last pic is of a leaf that will eventually drop but doesn’t concern me. It’s not spreading in the sense that it is affecting other leaves or the pseudobulb, it’s just dying back

Edit: please excuse the cat hair fuzz on some of the leaves. This is the one plant that my Darla likes to rub all over :lol:

That is interesting. I find similarities between our leaves, thank you for posting images. It is immensely helpful to hacve a visual!

I am including some images of the spotted leaves as of this morning. You can see the new growth, too. No spots on those fresh green leaves.

The orchid came from a friend, perhaps he was unclear about the level of moisture. It already had some spots and as it got worse, I did treat with Physan 20 since much of it led me to believe to bacteria. Hopefully it was a light leaf treatment and won't harm too much... I will not repeat the treatment and will focus on keeping the moisture and humidity up. Thank you SaraJean and Estacion for this great information!