where to get Co2 in jax?

[robwsup]

Dave,
I'm saying it wouldn't be worth it for an LFS to stock CO2.

I've got two 20lb bottles. They've lasted a couple years so far, running on systems from 300-1200 gallons; 440ppm/12.5dKH.

 

[reefkeeps]

I use a 20lb bottle, costs $27 a year to fill.

 

[PelagicMagic]

i am getting ripped off. how much is a 20 lb tank?