This alone would make it useless to me. Fast is fine and dandy but not if I can't rely on the results being accurate. It looks like this tester is pretty much all over the place. I'll stick with my Hanna checkers and other test kits for comparison when needed. Maybe in the future they can make it more accurateWith phosphate accuracy of 0.2ppm, this would hardly be of any use for an SPS/Acro tank...




