Where to get dry ice or CO2?

[JohnNJ]

I got a 50 lb cylinder from a welding supply place I think. Everything together was around $200.00 - $250.00 for the tank and the gauge ($125) and 2 years later, my gauge is still showing full and the tank feels heavy as hell.

CO2 does not work well with gauges so don't rely on it. It will show full until the day it goes dead. You can only tell what's left in the tank by weighing it. That's why I chose to use two tanks instead of one. I always have a backup.