I checked around the Lower Mainland and couldn't find anyplace that sells "used" CO2 tanks. I tried going to several different types of businesses, but couldn't find anything. I checked just across the border and found a welding supply place that was willing to sell me a cheap CO2 tank and helped me set it up without a regulator. I got a valve for it instead which works great and some hose, and I'm all set.
Dry ice also works good, though the only place around me that sells it, won't sell anything less than 10lbs and it costs about $20. Gotta love living all the way out in the middle of nowhere! LOL!!
Annie B. <:3 )~~