Little white crawling bugs & a scale!

[LuvPhals]

Hello all. I thought we were doing so good here. Leaves emerging and growing, flowers budding and looking great ... today when I said good morning to my orchids I see a little white bug crawling on them. Then a leaf with some brown raised scale. Now what do I do? Does this mean these bug are in the medium bark too? Do I repot them or how do I treat the bark along with the plant? What should I use? My fan in the room went out for a week so there was alot of humid non-moving air. We went a year without any problems till now. Thank you!