The City of Toronto also adds phosphate to our water supply, yet another reason to monitor: https://www.toronto.ca/services-payments/water-environment/tap-water-in-toronto/lead-drinking-water/corrosion-control/
Write ReviewEasy to use. The built in battery saver timer function often shuts off the checker before you complete the test. I use the 1st testing vial as a blank, and use the second for the reagent reaction. Discovered I have a phosphate problem triggered by fish foods (nori/two little fishes) that was leading to hair algae problem. Rowaphos is lowering the phosphate slowly..... Also discovered downtown Toronto water (with RO system in place) has a phosphate level of 0.19ppm, contributing to problem. I'm now running Rowaphos as polisher for RO water and in the main tank.