OK.. I bought a Galaxea about a month ago from the LFS. It does not have the standard green tips, they are white. Has anyone seen a white tipped Galaxea?
Not sure if it's of any help to you, when I had low light using t5's my Galaxea turned brownish in colour and was starting to bleach out, as soon as I switched to MH with 14,000K the green colour quickly came back.
It's just me experience couch, with 10,000 the corals were turning brownish for me. Once I changed to 14,000 I noticed a lot of difference with their coloroation. Maybe the others can chime in and give you their point of view
In the meantime, till you get new light, move it to the top. Save up and go MH, you wont be sorry. It also gives you that awesome glittery effect you cant get with flourescent.