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Re: N:P

	I don't think the idea has been to drive the phosphate concentration
as low as possible.  I think the idea now is to avoid running out of anything
else (any other nutrient that the plants need).  Quite a few of us have posted
about deliberately adding phosphate to our tanks to get things going.
When there is sufficient of all the other nutrients there, phosphate
additions are very useful.

Paul Sears        Ottawa, Canada