i was having horrible tunneling problems with my smokes. was using the "green sponge" crap that came with my humies and 50/50 solution. the tunneling killed my enjoyment of the smokes. a couple of weeks ago i switched to 65 RH beads and SHAZZAM, my smokes are burning PERFECT! note to every other newb smoker, get some 65 RH beads, YOU WILL NOT REGRET IT! low cost beads = GREAT smoking! smoke on!