I have recieved a lot of driftwood offline recently and I have began soaking them. Well after two days the water is very brown which I expected, but I didn't expect the wood to flake so much like lots of little peices were floating around. Is this normal? Some of the peices seem pretty soft, is that bad? How long do they need to soak before they sink. or stop turning the water brown with tannings?? BTW idk what kind of wood it is.