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Natural Carbonation For Kegs

Discussion in 'General Brewing Techniques' started by ballantynebrew, 29/6/12.

 

  1. ballantynebrew

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    Posted 29/6/12
    Hey fellas
    Just got myself a kegerator and have to still get a co2 bottle, in the meantime I have a stout ready to be carbed. Mate of mine reckons natural carb is a good idea. Any advice on how much sugar etc
    Cheers
     
  2. nathan_madness

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    Posted 29/6/12
    Go to your local BOC dealer and get a bottle of CO2 and you won't look back.

    I have been told that the VT size is filled with a copper line over the poly line that fills all smaller bottles and apparently the copper line gives your beer a better taste. Can't tell you if it is correct or not as I went straight into the VT. $53 for 10kg of CO2 and bottle rental $140ish per year easy as.
     
  3. Brad Churchill

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    Posted 29/6/12
    I use about 50g of sugar to a 19L corny. Leave it for two to three weeks at room temp then hook it up to gas at serving pressure.
    You use about half the amount of sugar you would use if you were bottling to get the same level of carb.

    Cheers
     
  4. ballantynebrew

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    Posted 29/6/12


    cheers brad c for the advice

    keen to get my co2 bottle but need to wait for the mrs approval. ha ha
     
  5. hirojessie@bigpond.com

    Beer Snob

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    Posted 29/6/12
  6. Tim

    Retro Ghetto Meister

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    Posted 29/6/12
    Just be careful if you are planning to natural carb a keg as the lids need some positive pressure to seal properly. Normally the seal is good enough to naturally carb, but on others I have found I need a quick squirt of CO2 to seal them.
     
  7. .DJ.

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    Posted 29/6/12
    quick Q - why do you halve the amount of sugar if kegging?
     
  8. seamad

    beer dog

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    Posted 29/6/12
    less headspace iirc
     
  9. doon

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    Posted 29/6/12
    Yeah 50g of dextrose I found is spot on after two weeks although I still burp the keg with co2
     
  10. Nossil

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    Posted 29/6/12

    I wouldn't rent from BOC. I bought one from my local HB shop recently. Brand new 7 or 8kg one, filled with gas for $250.

    If you get over homebrew within a year(ha!), put the gas bottle up on ebay and you'd get $150 or so for it. Silly to pay a crazy $140 a year to rent something you are potentially going to use for years to come.
     
  11. WeaselEstateBrewery

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    Posted 29/6/12
    Couldnt agree more
     
  12. mkstalen

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    Posted 29/6/12
    Just remember you're still going to need the CO2 to push the beer out. If you don't have a CO2 bottle your first few beers will probably pour ok with the pressure in the keg, but as you drink more beer there will be more headspace for the naturally produced CO2 to escape into, and I recon by the time you get to not even half a keg you'll have flat beer which won't pour.

    So it's fine to natually carbonate a keg to save on CO2 but you still need a CO2 canister to maintain the naturally created pressure...
     
  13. nathan_madness

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    Posted 29/6/12
    I am pretty sure that you will be paying for pressure testing and crack testing on any cylinder that you own yourself every 2 years. That is why so many people now do the swap and go on the LPG bottles. I use to pay for my Air/Nitrox bottles for diving and it was very expensive almost cheaper to buy a bottle every time.
     
  14. Muscovy_333

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    Posted 29/6/12
    If you can get hold of a CO2 Fire Extinguisher, they work a treat.
    Plenty of threads on here to show you how.
     
  15. nathan_madness

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    Posted 29/6/12

    Just did a bit of quick research. Hydrostatic testing is due every 5 years on CO2 cylinders. Probably worth it if you can't write off cylinder rental.
     
  16. jkirky

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    Posted 30/6/12
    I know extinguishers are every five years, but my co2 food grade is dated for 10 years...
     
  17. seemax

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    Posted 30/6/12
    Many of us are swap n going CO2 bottles now, in Melbourne at least... $25 for 2.6kg.
     
  18. Innes

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    Posted 30/6/12
    I naturally carbonate or "cask condition" all my kegged beers.

    There are a few reasons why I do this, mainly because I use soda stream bottles to serve the kegs and because I like the traditional method.

    I chill my fermenter to 7C for 3 days and then filter with a 5 micron pleated filter which still allows enough yeast through to do the job, but stops any chunky bits. I then add dextrose or DME to the keg (at what ever rate beersmith suggests for the style) and then burp the keg with CO2 a few times to get rid of any oxygen. I leave enough CO2 in there to keep a positive pressure on the lid seal. I then give the keg a gentile shake to mix the dextrose/DME into the beer and then put the keg into my fermentation fridge set at the same temperature the beer was fermented at.

    In about 1-2 weeks, I transfer the keg to the serving fridge. After a day or two, I hook up the gas and pour 1-2 pints until the beer runs clear.

    I find using a 5 micron filter leaves just a slight dusting of yeast on the bottom of the keg. If you don't filter, the yeast layer can be much thicker. Either way, as long as you don't disturb the keg, you won't get any yeast after the first 1-2 pours. If the keg gets knocked or moved, just repeat the steps.

    I use the same method for my bottled beers, but double the amount of dextrose/DME.

    I like using the soda stream bottles because I can serve a few kegs from one bottle. Though I have spares, if I run out, I can swap them at the local woolies.
     
  19. Tricky Dicky

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    Posted 10/2/19
    Can a keg be naturally carbonated in 12 days? I put in 52g of sugar boiled in water into the 19L keg and let it sit at 20c, tested after 12 days, it seems to have carbed up nicely but do I need to leave it any longer ?how do I know if it's ready?
     
  20. Moog

    BIAB-ER

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    Posted 10/2/19
    that sounds enough to me, you could wait another week to be sure but should be ok
     

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