Bob3
Contributor
I pulled that trick on a guy once; he spotted my 12 cu ft bottle & "assumed" it was argon, said he always wanted to try it.... my "argon" bottle will actually just be filled with air.
I happily passed it over & after the dive he commented on how much warmer he was. :tease:
oh yah, here's a page from a previous post about the club meeting: http://www.bubbleseekers.com/club.html
Got a lot of clubs down that way, may/may not be the same one.