Wow, it's been a while since I last updated this thread. So, all of the anthias died in QT. As they were dying one by one, I was losing the battle with dinos and lost all of the corals (22) in short order. I was going back and forth about either selling the tank or putting it into storage and turned the lights out. After two weeks of lights out I turned them back on about a week ago just to see what would happen...still no signs of dino or GHA. I still have the purple tang, which is a relief.
I'm going to go out to a LFS tomorrow and see what they have and possibly get a few more fish for QT. I've decided that I'm not going to get any high-maintenance fish, at least for now. I just bought a boat and started dating the most awesome girl I've ever met, so my time and efforts are not exactly aquarium-centered right now. I'm not going to do any water changes on the DT until the fish are out of QT, since dinos die with higher nitrates and phosphates. If after a water change in 6 weeks the dinos do not come back, I'm just going to get another 20pc sps frag pack and let the tank chill for a while.