I read in the EI article that a typical uptake rate of NO3 is 1 to 4ppm per day in a high light CO2 tank.

I assume this is for normal uptake.
If the plants are on surge or luxury uptake could this upper maximum change?
or does the standard typical maximum still apply?

I am not asking for specific rates (although if anyone knows them that's great!), rather I am curious to know a bit more about the process. I am content using EI as a base and experimenting with my dosing on the 'make a change every 3 weeks' plan to find out what is best for my tank.

Cheers, Matt

PS Guess who didn't start dosing nitrates until recently

One person reported 8ppm of NO3 uptake in one 24 hour time peroid, but that rate cannot be sustained.

Not sure about the others, even that might not be due entirely to plant growth either.

Regards,
Tom Barr