CO2 question

Fisher2007

Member
Joined
19 Feb 2018
Messages
432
Location
Warrington
So my new tank has been running for the best part of 4 weeks and this is the first time I've used CO2 on a planted tank. It's approx. 220-250 litres

Right now I'm running a 2kg bottle (well 5kg when full) with a CO2art SE dual regulator into an inline diffuser

The question I have is how much notice of when the bottle needs changing will I have? The pressure at the moment is about 700psi (I'm at work as I type but from what I recall) and it shows on the dual regulator that 500psi and below is in the red section. I'm therefore wondering if the reduction in CO2 will be a slow wind down or will it get to a point and fall off a cliff? I just wanted to make sure I've got ample time to get another bottle so I don't run out

Cheers
 

SRP3006

Member
Joined
18 Feb 2019
Messages
437
Location
GB
When my co2 reg shows a drop in pressure towards 500psi I know I have a few days before the bottle needs replacing. I never seem to let the bottle empty completely as I worry it'll run out mid photoperiod and I won't be home, therefore I let the pressure drop so far and then I change it.
 

Zeus.

Member
Joined
1 Oct 2016
Messages
3,215
Location
Yorkshire,UK
I use a 6.5Kg bottle on 500l tank and when it starts to fall below 1000PSI I have about 5-7 days left but run it till empty as I have a duel reg so ne chance of end of tank dump. Cylinder lasts about 30 days
 

Siege

Member
Joined
11 Aug 2017
Messages
1,056
Location
Cambridgeshire, UK
Bottles are constant pressure so will stay at full forever (psi dependant on room temp). Then one day fall to 500 and reduce gradually from there (quickly compared to before)

This will be a warning in that you are gonna have to have another bottle lined up. You can let it go to zero no probs then change with your reg.
 

Fisher2007

Member
Joined
19 Feb 2018
Messages
432
Location
Warrington
Thanks all. Pretty much what I thought. I'll get a spare now and then always have one so I'm bot caught out at any time
 

Similar threads

Top