Brown hair algae in frag tank

[Dave-T]

I just got back from a weeklong vacation, and a ton of brown hair algae has appeared in my frag tank. It's connected to the same system as my display tank, and I don't see any in there. Thoughts? All I can think of is that there's some cleanup crew I have in the display that I need to add to the frag tank. In the display, I have quite a bit of CUC (various snails, urchins, starfish, tangs, ...), in the frag tank all I have are foxface and a few snails, although I'm not sure how many snails are left in there.

 

[Jason_MrFrags]

fish are probably eating it in the other tanks.