You can use your hand to wipe them off, or just wait. They go away in a day or so.
You should take the anubias out of it's pot. The cotton that they use in those pots will start to rot, on top of that they are loaded with all kinds of super ferts that can cause an algae bloom if too many of them are left in the tank.
Looks really good so far. I'm jealous of that tank!! MMM acrylic goodness.