Wow...considering everything that has been said, I guess here is where I'm at:

1) Get the water checked, just in case
2) Plan on doing some feeding, (aeration is already in place as of yesterday)
3) Don't replace the dead CC, consider that this is likely a good thing in the long run
4) Ask APStockers to give equivalent minnows instead of replacing the waranteed dead CC.
5) Careful harvesting is a necessity.

I've learned a lot today from you guys already. I cannot tell you how much I appreciate this...even though it is making me sick to see those dead fish. (6 more CC since I started this thread this AM--which is very unusual since they almost always croak at night.)