Neil, I've always used Jason's Dry Ice since I used to live on Barton: http://www.jasonsdryice.com/ Jason's Dry Ice, Inc. Phone: (651) 645-6433 Fax: (651) 645-9579 2103 Charles Avenue Saint Paul, MN 55114 jdi(a)citilink.com They are only open during the day hours during the week, so no nights or weekends. Last time I was there, I got my 20# tank hydro-tested and filled. Rates are reasonable compared to other locations. Usually takes a couple days, though if you call them in advance, you can figure out when they are filling tanks, and schedule a morning drop-off and afternoon pick-up. FYI, I always keep a back-up 4# tank, just in case. Andrew --- Neil Schlegel <n_schlegel88(a)yahoo.com> wrote: