Well, I awoke to find the other dat dead at the bottom of the tank this morning. No marks on him, so it wasn't murdered by anyone else in the tank. I adjusted water temp., chemicals a few days ago when the first one died, so I have no idea why this happened again. I have circulation and air running in the tank so that's not the issue.
Anyhow, I have a philosophy final in 30 minutes, so I can't look into it any more at this moment. I'll do another 3 point test when I get home in a couple hours. My arowana and bichir both seem fine. Currently both are a little fatty since I just fed them live last night, and they are acting like they have been for over a year now. I even just recently got a clown loach that seems to be happy. Really odd to me, but I am sad because I've lost the only 2 I've ever had in less then 2 weeks. That is really abnormal for me, as I haven't killed a fish ever! And I've been keeping fish for over 7 years now, even though I just recently got into monster fish, before I kept mostly small cichlids a couple oscars being the largest fish I had at 12 inches each.
So....looks like this journal will be closing sooner then expected. Thanks to those that have read it, and here's to the future!