first things first what size are u looking for? i found it cheaper also to get a used tank on CL and just refil it vs buying a new one full just something to think about. if u do get a 20lb i think grow depot on 104 near i25 had some used ones for 95$ i do it this way as its the same cost to fill my 5lb as my 20lb kinda easy choice to get 3x more for free then u can have all the co2 u need with lots of surface movement for best of o2 and co2 for the plants.
if u need a smaller size i might be able to work something out with ya but idk what size u need / want
thanks I am thinking 20 right now, or maybe 10. These are prices for full tanks.
5LB Brushed Aluminum – New $79.99 20LB Brushed Aluminum – Used $109.99 50LB Brushed Aluminum – New $229.99 2.5LB Steel – $39.99 5LB Steel – $59.99 10LB Steel – $72.99 15LB Steel – $84.99 ON SALE! ONLY $79.99!!! 20LB Steel – $99.99 50LB Steel – $195.99 https://thedenverliquorbarn.com/?page_id=1531
20 if u can fit it, its $11 to fill/swap well worth it, then if u have more tanks just add to that regulator and save even more rather than tons of 5lbers. 109 is fair but really its a tank an you will have to swap it out at some point, its cheaper to fill that way an u dont have to worry about the stamp on it also, but some people have to have the NEW item even when it doesnt do anything but sit there.