Help me please!!

[kimlynn]

I was wondering if i could use this for my C02 tank for my fish? it is the first picture that is for sale....

http://vancouver.en.craigslist.ca/bnc/tls/1379801850.html

 

[dundadundun]

i believe co2 tanks need co2 regulators for a couple reasons. 1 being the threads and the other being the seals. co2 is pretty corrosive.

i'd check to see if that's what they're for. probably not or it'd probably be listed but you never know.