Orange Juice CO2 system - The Planted Tank Forum
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post #1 of 6 (permalink) Old 10-27-2008, 08:23 PM Thread Starter
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Orange Juice CO2 system

So, my friend said that he read somewhere about using orange juice as a CO2 production unit. I was looking to upgrade to the bottles the juice came in, so i thought i'd give it a try. I hooked up 2 bottles to my bubble counter, and dumped yeast into them (after draining out 1/4 of the bottle). Luckily one of them didn't work, because the other was more than sufficient to suffocate all my fish the first night. Luckily i only lost a few shrimp, but lesson learned. Then, the next day, the co2 production completely halted! Anyway, i guess if you need one day of monstrous co2 output followed by nothing, orange juice is the way to go. I think i'll stick with my original plan and go w/ the good ol' sugar and baking soda
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post #2 of 6 (permalink) Old 10-27-2008, 08:24 PM
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pH of orange juice may be too acidic for optimal CO2 production by the yeast.
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post #3 of 6 (permalink) Old 10-27-2008, 08:33 PM
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Hmmm...very interesting.

Maybe if you dumped out 9/10 of the orange juice and replaced the other 1/10 daily. You could get 10 days out of it, at standard production speed.

Just a theory, the numbers mean nothing.

Any idea why the other one didn't work?
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post #4 of 6 (permalink) Old 10-27-2008, 10:12 PM Thread Starter
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i'm not sure why it didn't fire up... i may not have put enough yeast into that one to get much production, or it may have fizzled out before i noticed it (i let them warm up for a night before hooking them up). Either way, even just one bottle was enough to overbear my 29g tank. It was like hooking up a hose to my tank, there were no breaks between "puffs" of co2
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post #5 of 6 (permalink) Old 10-27-2008, 10:19 PM
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Enjoy the orange juice with breakfast but leave it out of your CO2 fermenter. It's a nutty idea. Studies show that yeast prefer sucrose (table sugar). Why would you use anything else? Below is the best webpage I have found explaining everything you need to know about CO2 fermenters for aquariums.
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post #6 of 6 (permalink) Old 10-28-2008, 01:22 AM Thread Starter
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meh, i had some upgrades to do to the fermentation system anyway, so i figured what the heck... Plus i now have some very good hard orange juice to enjoy this weekend.
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