Hair Algae problem

[Charlie's Angel]

Not sure where to post this so I put it into two forums.



I just put up a 375 6 weeks ago and have a huge hair algae outbreak. My refugium is 150. Both the refugium and display tank are getting over run with the algae. Half the live rock was moved into the new tank from older smaller tanks and the other half is new. Here is what is in the tank now, most is there to help the algae.

30 snails
1 large sea slug
1 urchin
6 sally light foot
5 hermit crabs
1 scribbled rabbit
1 lawnmower blenny
1 naso tang
1 kole tang
1 purple tang
1 convict tang
1 sixline
1 fairy wrasse
1 royal gramma
2 clowns

All water parameters are great and I did a 70 gallon water change this weekend. I am using a kold-sterile system to filter the water. Never had a problem in my smaller tanks before. My halides are only on for 5 hours a day. What kind of clean up crew do I need. Seems like I might need 300-400 hermit crabs (mostly blue legged)? Is this too much? What else can I do? Help.