White dots in orchid plants on fir bark

[Mercurianmad]

What are these white dots on the fir bark in my low light orchid plants (Oncidium and phalaenopsis)? They don’t seem to be bugs and I rinse every once in a while with BT so I don’t think they’re bug eggs. But I could be wrong. They’ve been there for a few months. Is it just the fir bark breaking down?

Anyway the plants seem healthy but I just wanted to make sure it wasn’t something that I should worry about.

[reverseboB]

I think it is a fungus. I have several plants, dendrobiums and phals that have it. All of them are in bark. Doesn't seem to bother the plants. Not a fan but haven't found a way to get rid of it.

[camille1585]

This sort of fungus will usually develop on decaying material (and won't harm living plant tissues), so if you haven't repotted in a long time, it can be a sign that the medium needs to be replaced.