Draft Gas (CO2 N2)

1446 Views 7 Replies 5 Participants Last post by Left C, Jun 21, 2007

Left C

Discussion Starter · Jun 20, 2007

I was reading jesstray's post about ordering some CO2 equipment. http://www.plantedtank.net/forums/equipment/48442-pressurized-co2-questions.html#post431382

MiSo mentioned getting CO2 from http://beveragecontrol.net/ and they sale Draft Gas (CO2 N2) for draft beers like Guinness. http://beveragecontrol.net/Co2.htm

This might be a dumb question, but can you use this for a planted aquarium? It has CO2 plus Nitrogen. Draft Gas costs a little more that regular CO2. Is (CO2 N2) put in CO2 tanks or Nitrogen tanks?

I Googled Draft Gas (CO2 N2) and found that it's available in different blends:
N2 - - CO2
75% - 25%
70% - 30%
60% - 40%
25% - 75%
??% - ??%

Mixed gas regulator: http://www.beveragefactory.com/draftbeer/regulator/double/742HP.shtml
Adapters: http://www.beveragefactory.com/draftbeer/regulators/adapter.shtml

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epicfish

· #2 · Jun 20, 2007

....why use draft gas if it costs more than regular CO2?

And I'd think so since nitrogen gas is in our atmosphere and probably highly dissolve in our oceans/lakes, etc...I don't think more N2 would cause any appreciable harm.

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Kelley

· #3 · Jun 20, 2007

N2 is completely inert. But why use it? A waste of money.

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mistergreen

· #4 · Jun 20, 2007

BGA/cyano love to fix atmospheric N2 from what I remember... You might get a BGA outbreak.

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footbeat

· #5 · Jun 20, 2007

If you want to go this route, you'll need to make sure that your gas distributor will fill a CO2 Tank with a CGA 320 outlet with a gas meant for a tank with a CGA 580 outlet. If not you will need to get an adapter.

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Left C

Discussion Starter · #6 · Jun 20, 2007

I couldn't remember if plants could break apart the N2 molecule or not. If they could, they could use it for a nitrogen source along with ammonium and nitrate.

Kelly says that N2 is inert; so that's that. Bad idea. I won't be messing with it then. Thanks guys! :smile:

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footbeat

· #7 · Jun 20, 2007

Plants can't break apart N2 but there is a type of bacteria that can do this. It lives in nodules on the roots of soybeans and lentils forming a symbiotic relationship. The bacteria fix nitrogen from the air and the plant uses it. I don't think this relationship exists in any aquatic plants. And mistergreen is right about bga/cyanobacteria fixing nitrogen. Although I'm not certain it will lead to an outbreak.

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Left C

Discussion Starter · #8 · Jun 21, 2007

Thank you for the information, footbeat.

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