[I]@bimmerzs wrote:[/I][quote="I would not go with a 5# Co2 tank said:
I thought the 5# was the bigger one that could support a year usage. Am I thinking wrong or should I think the 20#. What # were you thinking."]
I have a 5# on my 255. It works fine, but you will not get a year out of it. I'm not very conscious of how may refills I do, but if I had to guess, I would say 2-3 a year refills. Just a guess though. I should probably keep track of it. I have a Geo Reactor. Love this thing. If you have the room for a 10#, I would get that.