"bo0ger1" .@. wrote in message ...
I realize that one will have a faster rate than the other. My point is it
doesn't matter because they all are moving in the same direction, just with
different rates.

If the consumption of certain ions is slower than the replenishment
rate than you could keep up with water changes...

They also only say "limit". How much is it limited by?
It could be only 2-5%.

Or 80% - it will depend on the rate of the water change
and the amount of consumption of ions by your corals...

Oh, right - you do not have corals! :-)))
What do you do in the *reef* forum than ?