How will I know I need to refill CO2??

[killi69]

The most basic of questions, I know, and one I am a bit embarrassed to ask but would like to know the answer before the cannister actually runs out.

Is it by checking the gauge - and should I refill as soon as the pressure starts to drop or leave it till it reaches a certain level?

I read about something called like 'end of tank syndrome' where a lethal sudden burst of CO2 release can occur when the cannister is almost empty? Just started on my CO2 journey and want to be prepared.

Many thanks people.

Andre

 

[Aqua sobriquet]

Have a look here:

http://blog.greenleafaquariums.com/2008 ... -aquarium/

 

[killi69]

Thank you!!

 

[spyder]

I've just had my 1st run dry and noticed I was getting less gas. You'll see the pressures go down. If you have a dual reg once the working pressure goes down you almost out.

Next time, as I now have a spare, I would change just after a noticeable pressure drop instead of upping the injection rate for a few weeks.

 

[Aqua sobriquet]

As the link says. Once the high pressure gauge drops you don't have liquid CO2 in the bottle any more, only gas, so time to re-fill.