The Planted Tank Forum - View Single Post - Hagens Natural Plant System Co2 kit (new)
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Old 01-23-2003, 05:33 PM   #3
anonapersona
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Generally, one doesn't run an air pump when adding CO2. You lose the CO2 from the agitation.

Whether your fish will get enough air without that could depend on how heavily your tank is stocked -- imagining it is possible that you have so much fish and so few plants that O2 is an issue.

In a well planted tank, with good light and CO2 and fertilization you would expect that the plants will make enough O2 during the day to carry both fish and plants through the night easily.
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