what are they and what can be done

[Quinn]

My understanding is that increased flow sometimes does away with hair algae. Anecdotal evidence, but the worst case of hair algae I ever saw was in a tank with almost null circulation. What do you guys think?

As for the wrasse, that was intended for the pods (which I understood to be the main concern of the tank owner). You'd want to use a six-line or something I suppose, definitely not a cleaner. Yes, more organics probably won't help the algae problem. But like Brad said, the bugs are probably not an issue. I wouldn't resort to buying livestock to get rid of a pest anyways. Deal with the cause not the symptoms.