You are dosing 32.57 ppm NO3 per week?
On this, I have had the same experience as Cavan --too high or too low NO3. Whenever I tried to raise NO3 levels too high, I got green dust algae on the glass.
I've had large, robust Micranthemum umbrosum leaves at around 10 ppm. This plant may be sensitive to nitrate, but not that sensitive.
Knowing you, this extra amount of nitrate you're adding is fairly recent. I would retrace my steps back to the last thing that was changed before this problem occurred.
Carlos[/b] |