The Planted Tank Forum - View Single Post - O2 reactor??? Thoughts
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post #2 of (permalink) Old 11-21-2012, 01:43 AM
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CO2 dissolves very easily into water, but O2 is hard to get dissolved into water, and water holds a lot less O2 than CO2. Bubbling air through the water isn't an effective way to get more O2 dissolved. A wet/dry filter is a very effective way to do that, and those can be relatively cheap, for example

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