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Old 03-08-2014, 06:51 PM   #1
thind604
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Co2


Can you use food grade co2 for aquarium?


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Old 03-08-2014, 07:06 PM   #2
shift
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I would assume it's all the same. Anything food grade is usually safe
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Old 03-09-2014, 07:05 AM   #3
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Can you use food grade co2 for aquarium?


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Yes, it is fine.
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Old 03-09-2014, 01:02 PM   #4
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There is nothing specific in the industrial grade CO2 that your tank needs or conversely something that is missing from the food grade that I am aware of? One is 99.9% pure, while the other is 99%.
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Old 03-09-2014, 02:46 PM   #5
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There is nothing specific in the industrial grade CO2 that your tank needs or conversely something that is missing from the food grade that I am aware of? One is 99.9% pure, while the other is 99%.
Negligible difference. The plants wont care.
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Old 03-10-2014, 06:36 PM   #6
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Industrial = 92% pure, Food Grade = 95% pure, Medical = 99% pure.

The gas is all the same, the impurities come from the type of CO2 tank it comes in. Medical has a glass-lined CO2 tank, not sure about the others.

I use Food Grade from a home brew store, and I've been using it for a decade. Perfectly fine.
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