What can i do about mold in cocofiber?

I'm at about week 2 of veg and I've been seeing some mold in my cocofiber. There doesnt seem to be any on the plants.

Is there anything i can do about it before it becomes a problem?

Mold is never good, usually indicates some other problem, like temps too high, res or water not covered, poor ventilation, etc. Please tell us more, pictures would be a plus. VV