Week 5.5 update: it has been two weeks since I added the second heater, and I think it has made a difference. That said, I wish I had them from the start, as the amount of flesh on the skull is pretty low. Another thing that I wish I had done from the start is use warm water. I think that the water changes with cold water from the outside faucet really slowed everything down. I finally had a couple of hours last night and worked over the skull with a pair of needle nose pliers to try and tug what was loose.
This afternoon, when I changed the water, I threw a freezer burned chukar in with the skull to have more flesh to try and boost the bacteria growth. I'm hoping that speeds things back up.
Attached are some photos of the progress as of today.
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