fresh water skimmer

[Static]

Originally Posted by X-Treme

Ummmm....not AT ALL true. Plants NEVER EVER output CO2. They USE CO2 to create O2, however with no light, there is no photosynthesis, therefore no O2 output from plants.

http://van.physics.uiuc.edu/qa/listing.php?id=848

I'd be tempted to say that plants are constantly outputting co2. During the day time it's outweighed by the output of o2 from photosynthesis.

Sorry for the off topic.....