Pressure in CO2 tank starting to drop

[skeletonhand]

I've got a 5lb cylinder that was filled back in November. The pressure in the tank is normally 900 psi. It's starting to drop a bit, down to 850 psi. I noticed the drop 3-4 days ago. Any ideas on how much longer do I have before the tank will dump? I've got another tank coming, and I'm hoping it will last untill then. That way I don't have make seperate trips to fill 'em up:dance2: .

Thanks

[Mgamer20o0]

it should should last. the 5 pounder should last 6 months. i would look for leaks or something.

[fresh_newby]

check for leaks in your line...what type of tubing are you using? Clippard...CO2 tubing or airline type?

[skeletonhand]

I'm using some black, thick walled C02 tubing. I was running it about 2-3 bubbles per second. I checked all the threaded areas with soapy water, and no bubbles. That was when I first put it together, maybe I'll check again.

[Rex Grigg]

The pressure in a CO2 cylinder is directly related to the ambient temperature. I'm betting that your house is a bit cooler right now.

[fresh_newby]

definitely...he is in Nebraska...

[skeletonhand]

Good call Rex!! It's been colder here lately and I've been keeping the temp in the house down around 65.

Makes sense to me. Your the man!

Thanks