Review on 🐠 Qguai 9 in 1 Aquarium Test Strips - Saltwater Freshwater Pond Pool Spa Water Testing Kit: pH, Nitrate, Nitrite, Carbonate, Chlorine, Alkalinity, Hardness - Fast, Accurate & Convenient - 50 Strips by Lisa Becker

The idea of one step yielding results for 9 different tests is attractive. However, this product does not last as promised. With all accuracy - the colors flow into each other. There are also colors that don't match, shades or something else. Some of the results are completely different from the other two test sets I have. Also, completely from what's in the fish shop. The written description in the table on the bottle is almost illegible. I don't think it was intended for those who see less than 20/20. Also, I couldn't find a website where I could download the chart in a slightly larger font.