So after 5 minutes, my Nitrate test says TRACE ppm.
After 30 mins, 1.0 ppm.
After 1 hour, 2.5 ppm.
After 2 hours 5.0 ppm.
Then it stops changing colors.
The test says look at 5 mins.
Anyone else see this and know which reading is the official one ??
I'm glad I didnt empty the tube out one day. I've been thinking it was under 1.0 this whole time and putting more and more Flourish Nitrogen in.