How long can your 10lb CO2 tank last? - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 03-24-2006, 05:20 PM Thread Starter
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How long can your 10lb CO2 tank last?

My 10lb CO2 tank lasts only 2 months. My tank is a 125-gallon tank. pH is set to 6.6. The CO2 injection is running 24/7 and is being controlled by pH controller. Just wonder whether I set my bps too high or the welding stop gave me a half full tank. To illustrate my bps, I would say bubbles are almost connected together instead of individual bubbles, so it is hard to count.

Thanks.
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post #2 of 7 (permalink) Old 03-24-2006, 06:20 PM
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Sounds like you have a slow leak. I would expect at least 6 months.

What kind of tubing are you using? Silicone can lose up to 6% of the CO2 per foot.

You can also weigh the tank. There should be a TW (Tare Weight) stamped on the tank somewhere. Add 10 lbs to that to find out what a full tank would weigh.

Make sure you used a new washer. Also make sure you tighted the regulator down firmly and check it a few hours later.
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post #3 of 7 (permalink) Old 03-24-2006, 06:36 PM Thread Starter
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Quote:
Originally Posted by Rex Grigg
What kind of tubing are you using? Silicone can lose up to 6% of the CO2 per foot.
I use CO2-Proof Tubing 100 from aquatic-store. I am not sure what they are made of but am sure not silicone.

Quote:
Originally Posted by Rex Grigg
Make sure you used a new washer. Also make sure you tighted the regulator down firmly and check it a few hours later.
I used a brand new plastic washer that came with the regulator. But I didn't check it after installed. I should do that this time.
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post #4 of 7 (permalink) Old 03-24-2006, 08:01 PM
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My 20lb tank has been running for the past 8 months. I don't know how long it will last, but, by logic, a 10lb tank should still be going at 4 months post-refill ( and probably should last much longer than that).
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post #5 of 7 (permalink) Old 03-24-2006, 09:13 PM
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Get a solinoid, you don't need to run it day and night. But either way it should last longer than two months. I run mine with the lights on a 90gal. i's been about 6 months, that reminds me.......
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post #6 of 7 (permalink) Old 03-24-2006, 10:48 PM
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My 10 lb tank has been providing CO2 to 3 tanks for a little over a year. It was perhaps a little overfilled, and is definitely going low now, approaching the 600 psi mark, but it CAN last that long if there are no leaks.

That's with a solenoid, so it runs only 10 hrs a day.


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post #7 of 7 (permalink) Old 03-24-2006, 11:44 PM
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My 10 lb ran for 4 months @1 BPS 24/7, and is currently giong on 2 months @ 3BPS and is still going strong.

Definilty get get the soapy spray bottle out, and check.

Walter

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--May the floor under your tank always be dry, and your glass clear!!!
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