The Planted Tank Forum - View Single Post - How much notice when CO2 tank is about empty?

Mike_D · 11-21-2008, 01:42 PM

Thanks for the replies!

I have a dual-gauge regulator, which normally reads between 800-900 psi for the tank pressure. I think I read that when it gets down to 600 psi it's time to get it refilled. But what I was wondering is how quickly that change from 800-600 psi normally happens for people? Is it a matter of days? Or does it happen very quickly? And once you get to 600 psi, will you still have enough CO2 in the tank to keep going for a few days, or does that mean the end is near? I'm guessing at that point there is no liquid CO2 left, so it all depends on the volume of the tank.

I know this all depends on the rate of CO2 you are using, which would be different for everyone, but I'm just trying to figure out how much warning I would have when the tank is getting low since this is my first time with using pressurized CO2. (So I have no clue about how long my tank will last yet.) I'm just worried about the case where it all of a sudden runs out and I can't get it refilled for a few days. But, from what Ted said above it sounds like if I shut off the lights while waiting for the refill, I may be OK.

Thanks,

Mike

11-21-2008, 01:42 PM	#4 (permalink)
Mike_D Newbie (View User Tanks) PTrader: (0/0%) Join Date: Nov 2008 Location: Aurora, IL Posts: 4	Thanks for the replies! I have a dual-gauge regulator, which normally reads between 800-900 psi for the tank pressure. I think I read that when it gets down to 600 psi it's time to get it refilled. But what I was wondering is how quickly that change from 800-600 psi normally happens for people? Is it a matter of days? Or does it happen very quickly? And once you get to 600 psi, will you still have enough CO2 in the tank to keep going for a few days, or does that mean the end is near? I'm guessing at that point there is no liquid CO2 left, so it all depends on the volume of the tank. I know this all depends on the rate of CO2 you are using, which would be different for everyone, but I'm just trying to figure out how much warning I would have when the tank is getting low since this is my first time with using pressurized CO2. (So I have no clue about how long my tank will last yet.) I'm just worried about the case where it all of a sudden runs out and I can't get it refilled for a few days. But, from what Ted said above it sounds like if I shut off the lights while waiting for the refill, I may be OK. Thanks, Mike