Dying Torch Coral...!

[fishbait]

We just got a torch coral on Saturday (actually we got a green star polyp and a leather coral as well) and it is not doing well at all! (neither are the others, but I'm more concerned about the torch).

The first day or two the polyps tried extending, but only got out about an inch, tops. By Monday they had receeded a great deal, and this morning they were sucked all the way inside, the tips had turned brown, and it looks very unhappy

As far as we can tell, the fish are not harrassing any of the corals (the fish are all doing fine) and we have repositioned them a couple of times. The torch started out with a medium current and now he is in less current - both places with good lighting. They are not close together.

Our tank/water specs:
72 gallons + sump
pH: 7.9
ammonia: 0
nitrate: 0
spec gravity: 1.021
temp: 80
lighting: 4x28w T5 fluorescents (2blue/2white)
tank depth: 20" - torch was about 12" deep initially, now its on the bottom

Please see attached pic for current condition.

Any advice would be greatly appreciated!