Planted Tank Enthusiast
Join Date: Feb 2013
Location: Jacksonville, Florida
Airgas has been alright for me. ~$20 for a 5# cylinder swap, and the always make sure I get a pretty brushed aluminum tank. There aren't any shops that I know of near my house, so a slightly higher cost of the tank swap vs. refill with Airgas offsets the cost of driving in Jacksonville traffic.
RAOK Club #105
Pay It Forward, Further the Community!
It's CO2. See-Oh-Two. Not C02 (see-zero-two).