Anyone ever run into this problem?....
I had a gig in a mid sized gymnasium with about 50' ceiling height. The image of the laser on the rear wall was very bright. The room was sufficiently dark. But the beam effects were very weak. I am thinking what the heck, so I pumped more fog into the room. Total pea soup... still weak beams. I figured the fog must not be getting up that high. But from the ground (where i was standing) it looked like the whole venue was full of fog, top to bottom. Went out to the trailer and brought in a fan. Within a few minutes the fog was stirred up and the beams looked great. I have seen fog stratify in rooms before but never completely stay below 10 feet.