My dinos are back... devastated. I don't get it. I test often and have "nutrients" in the tank. Phosphates are consistently .03ppm (1 time it registered 0) or higher and nitrates are typically higher than 4ppm.
Sorry to hear. I had 2-3 small relapses when I let my nutrients get low -- PO4 in particular. The error margin with the Hanna is +-.02 so running a bit higher is safer. I try to stay around .1 +-.