Ok, this sucks! I made my test solution (as described by Epic) and tested it. It barely even registered! Maybe 1 or 2ppm?? If that! It should have read 30ppm. Soooooooo, it seems my nitrate test kit is crap!
What should I do? Keep dosing the EI 40-60g regime?
Does anyone know of a good Nitrate test kit?
I';m glad you came back and said this, API test kits as well as any others than the Hach Lamotte have really sucked, perhaps a few get lucky, but I've not been one of them.
Given that they are hit and miss, I really find serious issues with folks telling others that they are accurate or that "they work for me" and do not suggest that they calibrate these junky 10$ kits.
Tell folks to calibrate if they want to reply on the measurements!!!
EI is nice because it shows just how bad and how frequent the test kits are, and I know if you seldom test, it's even a higher chance you do not calibrate