Best place to buy Co2 Tanks???

[STS9]

I know craigslist is usually the best bet, but there isn't a tank to be seen on my craigslist. What are my options?

 

[Granger2]

Check with your local grow store. Mine has them [20 lb] for $100 with a $20 fill up/exchange. Good luck. -granger

 

[DemonTrich]

My local shops are 160 for a full tank, owned the tank outright. I've found an online co selling tanks, but it's the same $$ as buying one outright and it's filled.

 

[TheWizardKing]

Beer stores are normally pretty cheap too

 

[STS9]

http://www.amazon.com/CO2-Tank-Alum...qid=1455329677&sr=8-1&keywords=20lbs+co2+tank


would this guy work? How often do you think I would have to refill in a 4x8, 2x600 tent? About 11 plants in 7 gallon smart pots.