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Aquarium Aeration

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The Fish Care Blog

How does aeration affect Co2 in an aquarium?

I've read some sites that say it decreases it, and some say it increases it..

Co2 is lost when aeration occurs.

If your keeping live plants you want to hold in as much Co2 as possible as that is there primary food.

If your keeping low light plants they don't need much Co2 so aeration is fine.

If no real plants aeration (gas exchange) just lets co2 out and O2 in balanced to levels based on room temp saturation. At 76 degrees there is more O2 in your tank than at 80.

but a weekly water change does the same thing as aeration so some people don't use bubblers at all in that case.
good luck!!