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Originally Posted by fortheloveofcrabs
Umm, not to be rude, but it is photosynthetic. In fact, cyano is believed to be one of the oldest bacteria today (some say as much as 3.5 billion years old). We actually owe this little brown mess quite a bit. It is thought that cyano was responsible for most of the early oxygen on earth. Cyano created this oxygen through photosynthesis.
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If we were talking about the type of cyano comanly knowen as "blue green algae" I would totaly agree with you but seeing as we have a different strain with no green chloroplast I am not sure if these are photosynthetic or not. so I can't say I am wrong or I am right but I know I have had this kind in tanks which were in total darkness.
Steve
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