How much longer will the 20oz CO2 tank last...

[anjousa]

Hello, I need some help. Anybody knows How much longer will the 20oz CO2 tank last or How to calculate to 65Gallon aquarium?
I will use Red Sea CO2 Pro System for PAINTBALL CO2 cylinders.
Thank you in advance!

 

[Fordtrannyman]

I think I've ever seen that kind of formula posted before.
Educated guess - 1 week

 

[Mgamer20o0]

yea maybe 2. people only use them on smaller tanks that need less co2. personally i dont like them at all. why not get a full co2 set up?