Algae ID

I have had this algae in my tank for quiet some time now, and was wondering what it is. My params are ammonia-0, nitrite-0, nitrates-<5, Cal-450, dkh-7 (just got some reef builders today), and pH-8.3. I do not have a PO4 test that works, but I do have a Phosban reactor with fresh rowaphos(250mL) on a 75 gallon tank. Please help me identify this algae and maybe some fish that will eat it. I would like a foxfaced rabbitfish.

 

hard to tell from the picture, but maybe it is coelothrix irregularis? Would like a close up of the branching structure..

 

This is how it begins to grow and then it gets thicker. It kind of grows in strands along the rock, and never gets to long, maybe 2" at most.