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re: DIY yeast reactors


>From: "Roy Parker" <Roy.Parker at ix_netcom.com>
>To: Aquatic-Plants-Owner at actwin_com (Aquatic Plants Digest),
>Date: Thu, 26 Jun 1997 22:04:11 +0000
>Subject: Re: Aquatic Plants Digest V2 #797
>> From: lwb <lwb at kuentos_guam.net>
>> Subject: Re: DIY CO2 generator
>>    The DIY CO2 generator is simplicity itself. A half gallon (2 liter) 
>> bottle with a small opening (glass is preferable), a one hole stopper to 
>> fit (a drilled air tight lid will work), airline tubing of proper length, 
>> an optionalairstone, one cup of sugar, one liter of water, and 1/2 
>> teaspoon of yeast. Those are the basics.
>After a couple of years of homebrewing, and a DIY Yeaster myself, I 
>want to make two comments.  First, make sure that the CO2 outlet tube 
>is as close to the top of the reactor as is possible.  Yeasties 
>sometimes get into a fermentation craze, depending on what you add or 
>what nutrients may be in your water.  It can cause a foaming problem 
>if the CO2 outlet tube is too close to the water.  Probably not in 
>the case cited above, as long as you add no yeast nutrient, and for 
>DIY CO2 you don't want to anyway.
>Second, stay away from glass bottles as much as possible for safety 
>reasons.  If you do use glass, don't use a twist on cap of any kind, 
>use a drilled rubber stopper to seal the top.  If you use a twist on 
>cap and it plugs, the glass bottle can explode with rather 
>disasterous results.  A 2 or 3 liter pop bottle is a better choice.  
>Even if the line plugs, the worst that will happen is that the 
>plastic splits, thus relieving the pressure.  Yes, you could have a 
>mess to clean up, but at least no glass shrapnel.
>Roy Parker, rparker7 at ix_netcom.com, regardless
>of what Netcom puts in the "reply to" field....
>Buckskinner, Brewer, and semi-Handyman
>Booshway, 1998 Original SW Reg'l. Rendezvous