I think I mentioned it to you when you came out, but I had about 100 pounds of live rock that I brought over from a cycled tank (I bought it from someone who was taking down their tank). My cycle appears to have reflected that of an existing tank cycle (no huge swing in amonia... it was very fast and gentle). Most of the polyps in my tank are those that came along on the rock.

That being said, I had a lot of hair algae growing. None in the sump, but a ton in the display. It stopped expanding after a couple of weeks. Then the snails and a tang hit it and it is nowhere to be seen.

Honestly I don't think hair algae is the one to be overly concerned with. Bacterial stuff... that is a bit of a pain since nothing seems to enjoy the taste