Co2 refill time?

  • We are currently upgrading MFK. thanks! -neo
It depends...

For me i run my Co2 canisters till they basically cannot keep up with the Co2 levels i need in the tank, which is normally when its basically empty, at which point i'll take them to get refilled...

So i would say as long as your is still able to handle your tanks Co2 needs, i would just keep using it...
 
be careful on letting a tank go empty unless you have a high end double action regulator.
 
I always ran my 5lb cylinder until it was empty too

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Which is fine as long as you have a 2 stage regulator. If you have a cheaper 1 stage regulator you run the risk of having an end of tank gas dump into your aquarium

Co2 is fairly cheap. I think it was 15-20 dollars the last time I filled my cylinder. Just run it down until it gets to just under 200-300 psi and have it refilled

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Which is fine as long as you have a 2 stage regulator. If you have a cheaper 1 stage regulator you run the risk of having an end of tank gas dump into your aquarium

yah, he is right about this. A single stage regulator has a risk of dumping all your gas at once into the aquarium, thus choking out any fish or other critters you have in there, which is not good. Btw, why are you running this at 80+ psi? I've only ever heard of people needing to go up to 40.

btw, why are you running that thing at
 
yah, he is right about this. A single stage regulator has a risk of dumping all your gas at once into the aquarium, thus choking out any fish or other critters you have in there, which is not good. Btw, why are you running this at 80+ psi? I've only ever heard of people needing to go up to 40.

btw, why are you running that thing at

100% correct. Co2 gas pressure is dependant on temperature. As the tank of gas warms up pressure on the tank side goes up. Lets say average room temp is 70F degrees. Average tank pressure of a full tank should be between 800 to 950 psi. Depending on how full. As you use the gas the tank pressure or high side will decrease in pressure. With a single stage regulator the low side will start to increase in peessure as its nearing end of tank. This can cause a spike in your output of co2 in the tank. With a single stage regulator you can run it till the tank is empty. But you will need to keep a close eye on it and adjust the lowside or working pressure as its called down to lower and safe levels. With a dual stage regulator like the ones I build you dont have to do this. Its keeps the working pressure normal.

I have to agree with hybridherp. Your lowside/working pressure is way to high. Even with a atomizer you only need a max of 30 to 40 psi. If your running a reactor or other lower pressure means then I would set it between 5 to 20 psi and use a good needle valve to adjust the output.

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