How Long Will This Last?

[angelfishguy]

okay i know knowbody will be able to give a straight up answer so im looking for guesstimates..
we have a 19kg(41 lbs) pressurised co2 cannister and wondering how long we might get out of it. it will be run on a 412ltr tank.

 

[OldMan47]

I use a 10 pound, a bit less than 5 Kg, bottle on my 45 gallon, about 170 litres, tank and it lasts around 6 months. I am going out on a limb and will say you are looking at around a year on the large tank with many times the gas volume. Of course, it depends a lot on how much CO2 you are actually adding to the water and for how many hours each day.

 

[angelfishguy]

I use a 10 pound, a bit less than 5 Kg, bottle on my 45 gallon, about 170 litres, tank and it lasts around 6 months. I am going out on a limb and will say you are looking at around a year on the large tank with many times the gas volume. Of course, it depends a lot on how much CO2 you are actually adding to the water and for how many hours each day.

thanks for the reply,
i know knowbody can give a diffinite answer but was just loking for a rough guidline