What I was trying to point out, just as a mathematical fact
is that the ppm never completely levels off if you are
doing regular additions and regular water changes (whether
daily or monthly, etc.); the curve always continues to
rise, ever more gradually. For most intents and purposes,
one can consider that it ceases to climb because the
increases become so very small -- literally, infintely
small if you follow the math.
In the real world, no one does exact dosing or exactly,
say, 50% water changes every time. Heck, who would bother
to try to measure so finely anywhow? ;-)
So the ppm will rise and fall.
But at least it's not a Cantorian infinity!
Scott H.
--- Andrew McLeod <thefish at theabyssalplain_freeserve.co.uk>
wrote:
Provided you have a fairly constant rate of
fertilisation, and are doing some waterchanges (any
amount, in fact), then the level of the nutrient will
always tend towards a FINITE value, not an infinite
value... even if you are only changing a tiny fraction
(ignoring evaporation). Of course, the more you change,
the lower this value will be.
_______________________________________________
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com
http://www.actwin.com/mailman/listinfo/aquatic-plants