i am on the verge of picking up 2 motoros for my 400 gallon tank tommorow , my question is how tolorent are they i am showing 0.75 nitrite 0.05 amn( barely traceable ) and 1.0 nitrite right now. i know how sensitive they can be . are my levels acceptable for them? i know they are in a 1.0 amn at the lfs i have tested there bag water on a previous purchase . any suggestions ? t/y