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Old 21-02-2005, 03:27 AM
 
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Sure. Send it, I'll tell you the species too.
My pioint is really, if the algae likes excess, why don't we see it in
tank with obvious excess levels of NO3 and PO4, light, CO2, Fe/traces,
K+, Ca, Mg ??????

Surely excess is 2ppm of orthophosphate(DIP) which is the most
bioavailable form of PO4.
How is that different than say 5ppm?

How much is too much PO4?
I have no practical reason to dose more than 2ppm but I'd like to know
what range causes problems...
I really do not know of an upper limit. If you have some concrete data,
that would be interesting.

Regards,
Tom Barr