I have one....bought it about three weeks ago. It is still in the settling / equalizing stage as I just got beads last week. I have a half pond of 70% beads in it, and am getting about 63-65% humidity in it and the temp is around 70 inside. I haven't actually put any sticks in it yet, since I am out, but am wondering if I need more beads to get the humidity over 65% ??? ??