chris wright - The gorgonian keeps looking better and better. It's actually happier since I pointed the flow away from it just over a week ago. There's now only about a 5 mm patch of algae on one of the terminal tips, and it's lessening daily.
The salinity control has been a little frustrating. I thought my refractometer was off, but yesterday Gabriel (GKarshens) came over with his refractometer, and he got the same reading that I had initially. Thanks Gabriel!! We tested his device with the 1.025 calibration fluid I have from Aquatronica, and he got 1.023 just as I had. I'm now of the opinion that the calibration fluid is off, since both of our refractometers read RO/DI water at 1.000. Anyway, I need to stop looking at numbers and keep my eye on the tank's inhabitants, as they are all doing fine so things must be okay.
maxxII - You are right, C. jordani is the fish I was talking about. I have seen that mesh cover before and was considering building one for night time use, but I think it will detract from the look of my rimless tank during the day. On the other hand, it's really inexpensive to build so maybe I'll put one together and see how it goes.
Thanks for your fish advice. My plan is very similar to the ones you proposed. My preference would be to add them all at once (small ones) if I can get them in together. I think I'll probably end up receiving the purple and yellow together, and the Chevron and powder blue will come in separately, so I'll have to select sizes based on what's already in the tank.