Well, it's beyond the point of being funny now...In just under 60 days, I have lost a total of 6 fish.  Captain Marvel kicked the bucket last night after only 4 days in the tank.  I took his remains back to the pet store this afternoon and exchanged the dead fish for a live one.  While I was there, I had a water sample tested from my tank and the pet store guy said that my water looked fine.  No other ideas, no other answers..."He just died," -- that's what the guy told me.

I have a 10 gallon glass tank waiting in the wings and I might get that cleaned up and ready by the weekend.  I am not sure what it will accomplish to move to a bigger tank, but I am almost out of ideas and I am beyond frustrated.