The clear bubbles are just gas bubbles off algae. The pink/red ones are red bubble algae, which can be a real nuisance. Get some grazers in there and get your nutrients under control or you'll be having some real problems soon.
Still hard to tell, but if we are just talking about the bubbles, are they like a black pearl? Might be just Bubble Algae. I know they look blue in the pic, but thats from the light.