Control valve on CO2 DIY ?? - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 02-22-2013, 08:21 PM Thread Starter
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Control valve on CO2 DIY ??

What I find with Co2 DIY (yeast/pop bottle/etc). The bubble count is very inconsistent. Has anybody tried to add a control valve to the setup and how did it affect yeast/sugar mixture on Co2 production on a somewhat pressurized container.
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post #2 of 5 (permalink) Old 02-22-2013, 09:11 PM
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The problem with adding a valve with a DIY system is that you can't control how much gas is being produced. Assuming you're using a pop bottle, while they are designed to withstand pressure, we don't really know how much pressure any DIY mixture can create. If you'd like to find out be prepared to clean up an explosion.
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post #3 of 5 (permalink) Old 02-22-2013, 09:22 PM Thread Starter
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Quote:
Originally Posted by creekbottom View Post
The problem with adding a valve with a DIY system is that you can't control how much gas is being produced. Assuming you're using a pop bottle, while they are designed to withstand pressure, we don't really know how much pressure any DIY mixture can create. If you'd like to find out be prepared to clean up an explosion.
I actually tried a little experiment with diy mixture capped it and let it sit for a week and the bottle was hard as a rock. So my problem is not the pop bottle as it can withstand the buildup of pressure on that amount of time and is designed as such anyway. The problem will most likely be the airline and the DIY fittings
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post #4 of 5 (permalink) Old 02-22-2013, 09:23 PM
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Originally Posted by iant View Post
I actually tried a little experiment with diy mixture capped it and let it sit for a week and the bottle was hard as a rock. So my problem is not the pop bottle as it can withstand the buildup of pressure on that amount of time and is designed as such anyway. The problem will most likely be the airline and the DIY fittings
You're braver than me!!! lol
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post #5 of 5 (permalink) Old 02-22-2013, 10:54 PM
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I found that my airline to bottle connections tended to start leaking too much if there was any restriction in the CO2 line. If you use one of the ebay bottle caps, or use bulkhead fittings in the bottle caps, you might be able to avoid that leakage and make it work. I wouldn't try it though because those bottles, as they get older, may not always withstand the added pressure.

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