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Old 10-31-2005, 10:04 AM   #11
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Scarf,

If its only been about 24 hours, then yes, just add another small pinch of yeast to the container. Let it set in there for, say 20 mins.
Then give it a bit of a shake (keep the cap off, and just hold your palm over the opening). This part is tricky though. If the yeast was totally dead, you'll be fine. But if a tiny bit if yeast lived and has started growing, shaking is gonna cause the mixture to foam over like a shaken soda can...so you might wanna do this outside.
This is also the reason you should NEVER shake a DIY once everything's been mixed together for more than a couple hours...but shaking at the start is important because it aerates the mixture, and yeast need oxygen for the first phase of their life cycle.
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Old 10-31-2005, 01:38 PM   #12
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A DIY CO2 setup is like making Beer. The protein drink fills that same role as Grain in beer making.

A side note, last night I replaced one of my bottles. The second bottle, that is still going strong, was started the second week of September. That's 8 weeks off of one mix. This is the longest I have let one go. I normally change after 4 weeks. Based on this result, i am going to try only replacing 1 bottle a month. (until I save up for pressurized that is)
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Old 10-31-2005, 03:09 PM   #13
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I have a 700ml bottle going for 3 weeks now. It looked like it was dying at week 2.... so i added about 5 tsb of sugar and swished it around. Its working like a champ still. and i only started with 10 tablespoons of sugar to start (smaller bottle... smaller doses?)

keeps my CO2 between 18 and 23ppm. Not perfect, but pretty good for a total of 3 dollars :P
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Old 11-09-2005, 10:00 PM   #14
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Thanks for the replies.

My CO2 is working well. I added another bit of yeast (after the boiling water incident) to the mixture and its been fizzing nicely and still is.

Though just a follow up question. It's around week 2 now. Although I see those CO2 bubbles bubbling out of the mixture (bit less though), my air stone is now not letting out any more CO2. I tried just squeezing the coke bottle and it released a large amount of air through the stone.

My thinking was that there may be a blockage on the air stone so it's not letting air through, so I forced air through it. Since there is still no CO2 running through the airstone, should I conclude that my mixture is near the end of its life? Or could there still be a blockage in the air stone or any other part of my setup?
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Old 11-14-2005, 06:11 PM   #15
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Try moving the stone so it is not so far under water. If it starts bubbling, then your issue is low pressure due to your CO2 output tapering off.
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Old 11-14-2005, 06:16 PM   #16
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Thanks for the reply mate.

Actually, in the meantime I just made a real easy "gas separator/bubble counter" bottle, and that's telling me how much output my yeast mixture producing. If that stops, then no more CO2 output. If that continues and airstone stops, airstone clogged.
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Old 11-15-2005, 01:01 AM   #17
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A nice extra benfit of a bubble counter is it keeps your stone from clogging less. Without one you seem to get a little "slimy stuff" from your yeast bottle up the tubes.
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