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post #1 of 3 Old 01-29-2011, 10:18 PM Thread Starter
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confused abut o2

i read on another thread, where someone sugested loosing the airstone for a planted tank, something about it removing o2 from the tank.. i thought that was the airstones job to put o2 INto the tank.. can someone clarify this for me..
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post #2 of 3 Old 01-29-2011, 10:39 PM
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Yes, airstones will add oxygen, but plants need CO2. (Plants give off oxygen, the fish provide CO2 uptake for the plants) So by adding more oxygen you're depriving the tank of CO2. No problem in an unplanted tank but not good for a planted one.

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post #3 of 3 Old 01-31-2011, 01:35 PM
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In a healthy (moderately) planted tank, the plants are the oxygen producers, and they make it from the CO2 the fish and substrate produce. If you have an airstone, you keep the plants from doing their job efficiently, and they can suffer for it.

I'm not sure the fish care where their oxygen comes from though. ;)

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