I cant believe what I saw this morning! Icicles on flue stack! Heres a video of what happened yesterday. I moved into a pile of ash that was c/s/s somewhere in July/Aug/Sept I can't really remember. I resplit some and its between 23 and 26% MC. I know my first season I burned wood with MC than that and had the same type of "steamy smoke" but never had icicles.