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[APD] Re: plant/algae competition
On Tuesday 20 January 2004 15:02, Ann wrote:
> But the plants ought to be leaking "plant products" not "plant intakes"
> this would help explain why it isn't so easy to say what is lacking, if the
> algae growth is reflecting the leakage of what is in the plant, stored
> reserves, not necessarily the inputs that are in excess now.
That was my case, but Claus' information was an plants leaking inorganic
nutrients -- the plant intakes. There seems to be plenty of information that
plants do leak quite a few products. I've had a hard time finding
quantification of how much, what kind and when.
This I found out; plants can leak up to as much as algae (~50% of fixed
carbon) and; the products leaked are colorless, metabolically available to
other organisms and include nitrogen-bearing compounds (not just simple
> I observe that when I add new plants to a tank, they frequently develop
> algae and then the old leaves decay, aided by the snails that come to
> feast. Removal of the old leaves is the best solution, for the new leaves
> are not as prone to the algae it seems.
Is it possible that those older leaves were emersed-grown and not adapted to
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