New Dendrobium Mold and Spots

[akorchid]

Hello! I'm new here. I've been looking around for some answers for my dendrobium. I've tried visiting nurseries, but sadly no on is very knowledable or is willing to give me tips.

It has two main problems: moldy bark and black spots under the leaves

I've heard the suggestion to repot, but it's still flowering and I've only had it a couple weeks. I've tried diluted soapy water. It seems there might be very, very small white bugs occasionally on the bark. I'm not sure if it's getting enough air circulation, but I'm afraid to repot it fully into the perforated pot right now.

Also, I've found some small black spots on the bottom and the base of my leaves. I'm not sure if it's a fungus, or what.

Here are some pictures:



As you can see it's still in the store pot, set in another perforated one.
I am going to get a grow light too. Anything in particular I should avoid?

Thanks so much!