Originally Posted by TomSD
It is called a swap for a reason... it will cost more if you come in without a tank.
And yes you can have 6+ cornies hooked up to a 5# tank. It just won't last as long as it would with only 1-2 cornies. Even then though it should be good for a while.
Yeah, they're definitely not gonna just toss in a free tank when you buy 5# of CO2. Your cheapest option is definitely going to be to hook your 3 new taps up to the same tank you already have. And frankly, that seems like the easiest option to me too.
If you were going to buy another 5# tank, I'd still hook all the taps up to one tank and that way when it goes empty you can just swap it out, instead of having taps offline until you get your bottle filled. Plus that way you can use the spare for cleaning, sanitizing, etc. (pushing stuff from one corny to another). That's what I do with my spare tank.