still all over the place!Sigh indeed. Have your readings settled down a bit now or are they still about the place?
well..i just dunno now...If it makes you feel any better, my nitrites haven't moved since I tested this morning![]()

aww thanks ctsv
i agree...they do for me....i hold them up to the light and compare tubes...if its a lighter shade of bright purple..its a 2.0 if its a darker shade of bright purple its a 5.0...IF it goes purple straight away in the bottom of the tube...its a 5+...there is no difference on the chart here either! xI've done a 30% water change to get the pH down, so hopefully it'll move along.
tbh, it could very well have moved. The colours for 2ppm and 5ppm on the nitrite test look exactly the same to me![]()