For those of you who have seen my thread progressions, I think I have narowed down the culprit. I think it was my problem feeder who did the weird poop. He has always had these little black flecks that I thought was scale coloration. After I looked closer, it's not his scales, or at least not all of them. They are mites under his scales making them look dark. The exotics vet is not open today, so until I can bring him there, is there anything I can do to get them out? I don't think the reptile spray is working on the ones buried under there, and a water soak seems to have eliminated very few of them.
Thank you all for the help you've given me.