That is what is was exactly...old and boned out. It didn't smell or anything, so I boiled it a couple times. I noticed after I boiled it the first time the water was a dark brown, most likely from the bark I used to have for my gecko. The second time I boiled it however, there was no residue left over, and it was fine. I rinsed it for 2-3 hours and then I put it in. I had to put a large rock on one side to keep it weighed down because it isn't waterlogged yet, but soon will be hopefully. I had just replaced the substrate in my tank about a week ago, so the water is nice and clean. It still is so I'm guessing the log isn't going to leak out any tea like water. Thanks for the help by the way!