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	Can live plants give off too much carbon dioxide when tank is unlit for fish health?
daddySEAL Enthusiast Posts: 221 Kudos: 68 Votes: 3 Registered: 04-Mar-2008	Edited by daddySEAL As I've read, with the right lighting, plants use carbon dioxide given off be fish to produce oxygen for the fishwater and the fish. And the plants release carbon dioxide into thw water when lighting is off. Can the levels of carbon dioxide given off solely the plants when combined with the fish themselves at night be too high for fish health?
Posted 16-May-2008 21:51
Shinigami Ichthyophile Catfish/Oddball Fan Posts: 9962 Kudos: 2915 Registered: 22-Feb-2001	I'm inclined to say no, as I've seen some planted tanks filled to the brim that still had fish in them. -------------------------------------------- The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian.
Posted 16-May-2008 22:27
daddySEAL Enthusiast Posts: 221 Kudos: 68 Votes: 3 Registered: 04-Mar-2008	Edited by daddySEAL But do live aquarium plants release carbon dioxide when the "Daylight" light is turned off at night and they are not producing oxygen without the light, friend Shinigami?
Posted 17-May-2008 00:52
Joe Potato Fish Addict Kind of a Big Deal Posts: 869 Votes: 309 Registered: 09-Jan-2001	But do live aquarium plants release carbon dioxide when the "Daylight" light is turned off at night and they are not producing oxygen without the light, friend Shinigami? That is correct. In all honesty, plants are actually producing carbon dioxide all the time. CO2 is a byproduct of cellular respiration. However, during the daytime when photosynthesis is occurring, they just reuse that CO2. At night, no photosynthesis means no oxygen production and any excess CO2 is released. As Shini said, though, it's unlikely that you could stuff enough plants into an aquarium to suffocate the fish at night.
Posted 17-May-2008 02:25
daddySEAL Enthusiast Posts: 221 Kudos: 68 Votes: 3 Registered: 04-Mar-2008	Edited by daddySEAL OK Good, Thank you...it was concerning me a little since I'm going to not use activated charcoal in my filters anymore (unless I want to remove medication, or something specific). I was concerned about that situation without carbon filtering in my FULL..FULL(of fish) tank with about 6 or seven plants that are growing bigger every day thanks to the "Daylight" light I installed! I had no idea of the amount the plants leached with the light out, or whenever. thanks
Posted 19-May-2008 20:45


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