Originally Posted by Sleepy
I wouldnÂ´t just blame it on the No2 level. Plants grow with a low nitrate level as well. At least my plants did with a 5 mg/l level and below.
There might be other things to consider before adding something to the tank:
CO2 vs. O2
Species of plant vs. appropiate amount of lightning
I agree. You shouldnt blame it on just Nitrates but I had noticed that when I dosed just the other nutrients minus NO3 then I had plant problems. Now dosing NO3 again I am seeing much better health in the plants, even my High Light plants that are doing great.