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BGA and nitrogen fixing...
I know someone on the list (Tom?) recently posted results of a study of BGA,
and found that the samples he examined didn't have the necessary parts to
be able to fix nitrogen from air.
I occasionally get a little BGA in my main tank, whenever I get lazy, and
don't prune the plants when I need to. In those cases, where the tall stem
plants reach the surface, some of the leaves right at the air/water boundry
get covered by a coat of BGA.
Prior to reading about the microscope examination of BGA, I assumed that the BGA
was thriving there due to being able to extract nitrogen from the air. No
traces of BGA anywhere else in the tank, except a little in the tubes of my
overflow box.
Can anyone offer any possible explaination for this pattern of BGA growth
other than nitrogen fixing?
--
Chuck Gadd