I've isolated the issue i think. I have a home-made humidifier in the tank and for some reason the temp around it was 107! I have no idea how that happened. I can only surmise that the coco fiber acted as in insulator and caused the heat to rise like that. I am working on a new, albeit similar, method of humidifying his tank. I will toss the substrate around and see if I can find a poop somewhere, though I have yet to see one and he usually burrows in different places. So I am constantly digging up substrate in different areas of his tank and I have yet to smell anything either. I ended up feeding him more last night as he was still hungry and I thought maybe that was the issue. He ate an additional 6 red wigglers (small worms about 1.5 to 2.0" in length and about as thick as a spaghetti noodle.