Glass CO2 bottle, why not? - The Planted Tank Forum
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post #1 of 25 (permalink) Old 01-17-2008, 12:52 AM Thread Starter
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Glass CO2 bottle, why not?

Ok I've searched around this forum but haven't found the answer to this. i read on a thread for what type of bottles to use that you shouldn't use a glass bottle for the yeast. what I'm wondering is why this is? thank in advanced.
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post #2 of 25 (permalink) Old 01-17-2008, 12:57 AM
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Ive seen plastic one explode I can only imagine what would happen if a glass jar would.
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post #3 of 25 (permalink) Old 01-17-2008, 12:58 AM
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Quote:
Originally Posted by Orlando View Post
Ive seen plastic one explode I can only imagine what would happen if a glass jar would.
+1. Boom.

More $$ too.
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post #4 of 25 (permalink) Old 01-17-2008, 01:05 AM
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i dont see how it would matter, since a lot of homemade wine is made in glass demijohns

btw, a blow off valve should always be used if you go through an airstone. if it gets clogged, the pressure will make it blow. Dangerous if its glass, or plastic.

and as for glass, it would take quicker for the co2 pressure to build high enough to bubble in the tank

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post #5 of 25 (permalink) Old 01-17-2008, 01:38 AM Thread Starter
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I have a wisky bottle with a cork (with a solid top) in it, what if i just drill through that, and tubing goes directly to a diffuser
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post #6 of 25 (permalink) Old 01-17-2008, 01:40 AM
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i'd still go for a blow off valve, they dont need as much pressure as a cork to blow off

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post #7 of 25 (permalink) Old 01-17-2008, 01:44 AM Thread Starter
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Ok thanks, but i hate to ask but what does a blow off valve look like?
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post #8 of 25 (permalink) Old 01-17-2008, 01:58 AM
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I think glass should be ok since many beer bottle and champagne bottles are made out of glass. It's much more difficult to deal with because it can break easily and is much smaller than a plastic bottle.
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post #9 of 25 (permalink) Old 01-17-2008, 02:08 AM Thread Starter
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Thats fine with me, also would honey be an ok substitute to sugar (I've read molasses and maple sugar can be used)
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post #10 of 25 (permalink) Old 01-17-2008, 02:09 AM
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I think you can use just about anything. I read once where some guy was using a 5 gallon gas can (plastic) he said he'd get good CO2 for 3 or 4 weeks. Just use some judgement. If it's flimsy it might explode. I'm sure a nice large glass Apple Cider bottle would work fine as would some larger liquor bottles. Anything heavy duty would due.....

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post #11 of 25 (permalink) Old 01-17-2008, 02:13 AM
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How are you planning on attaching a lid to the glass jar that will hold up under that kind of pressure?

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post #12 of 25 (permalink) Old 01-17-2008, 02:22 AM Thread Starter
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i have a relatively strong wisky bottle with a cork that i was considering using.
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post #13 of 25 (permalink) Old 01-17-2008, 03:12 AM Thread Starter
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again does any one now how well substituting honey for sugar would work?
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post #14 of 25 (permalink) Old 01-17-2008, 04:36 AM
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if you could afford honey every week, get a pressurized CO2 now.
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post #15 of 25 (permalink) Old 01-17-2008, 05:37 AM
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Yeast metabolize sugars. Honey contains sugar compounds. To the yeast, it's all the same.

According to wikipedia (which might be wrong), honey contains: Typical honey analysis[16]
Fructose: 38%
Glucose: 31%
Sucrose: 1%
Water: 17%
Other sugars: 9% (maltose, melezitose)
Ash: 0.17%
Other: 3.38%.

Simple table sugar is sucrose, comprised of glucose + fructose.

Let's say a glass jar can withstand as much pressure as a plastic jar.
Let's say they both explode due to too much pressure build-up.
Which shrapnel is more dangerous? Glass shards? Plastic shards? I don't know. Just seems more dangerous I guess. You can use it all the same if you want.
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