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Old 12-08-2014, 08:28 PM   #41
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I can live with the gurgling if I know my co2 is 100% dissolving.

So tomorrow before lights on I should know.


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Old 12-09-2014, 11:29 AM   #42
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It looks like this morning with the co2 on and no lights I have basically no bubbles. So I think the co2 is getting fully dissolved! I am waiting for the DC to change colors to make sure co2 is getting in the water.


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Old 12-09-2014, 11:32 AM   #43
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I payed closer attention to mine this morning and I noticed a few bubbles here and there, no noise though, may be an initial dissolving period in the beginning??

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Old 12-09-2014, 11:44 AM   #44
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Could be. We will see what it looks like mid day when the plants get going.

Now to figure out why my new canister isn't taking care of all the small particles floating around.


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Old 12-09-2014, 11:45 AM   #45
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CO2 dissolves into water relatively fast, but other gases like nitrogen or oxygen dissolves very slow. You sometimes get some of the latter stuck in reactors that can take literally days to fully dissolve. One of the things I really liked about Cerges reactors was that most of the water filters have a gas release valve on top that you can use to release recalcitrant gases to reduce noise. Someone could probably DIY something similar with a Rex Grigg reactor if properly motivated, but flipping the reactor with the water flowing tends to do the job as well, assuming your plumbing allows for such acrobatics.
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Old 12-09-2014, 12:35 PM   #46
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That makes sense. I did use the air release on the cerger but that didn't seem to help much.

It could have been a combination of a brand new canister filter being started up for the first time and the cerger used for the first time.

I have had co2 running for about 2.5 hours waiting to see my DC change colors.


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Old 12-09-2014, 05:43 PM   #47
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Aqua_chem, is that true for pressurized CO2, DIY, or both?


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Old 12-09-2014, 05:48 PM   #48
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Quote:
Originally Posted by dcutl002 View Post
Aqua_chem, is that true for pressurized CO2, DIY, or both?

In regards to what?



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Old 12-09-2014, 05:49 PM   #49
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CO2 Reactor Lesson Learned

Nitrogen and oxygen in the CO2 gas or the water itself?


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Old 12-09-2014, 07:57 PM   #50
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The gas made from DIY CO2 should be 100% CO2, while the gas in pressurized CO2 should be very nearly 100% as well, depending on the grade (although I think it's really a matter of 99% or 99.9%). The problem comes when air from another source gets into the reactor, such as if some gets into a canister during a WC and the canister spits it into the reactor. It's not so much a matter biproduct.

That being said, there is a noticeable caveat with DIY CO2. When you first start your batch, the entire CO2 fermenter (and any gas separator you use) will be filled with atmosphere, which is 80% nitrogen, 20% oxygen (and much smaller percents other things), which is all insoluble. CO2 is denser than either of those, so your reactor will initially release those two gases until the entire space has been replaced by CO2, after which point it will mostly be pure CO2. Those gases will take a while to dissolve and may linger in your reactor for some time. This can be reduced after the first batch by disturbing the gas separator as little as possible and filling the fermenting bottle as much as possible with your mash, leaving relatively little air in the top (but leave some, else you'll make other problems.
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