Hello all, i have a API freshwater drop testing kit with a PH and a High range PH test. I understand the difference...my issue is when i do the regular test my readings come out around 6.4-6.6 (test ranges from 6.0 to 7.6)which is close to where i want them. I decided to test it with the High range just for the heck of it and it reads off the chart at 8.8 (test ranges from 7.4 to 8.8) and above. I would think it would read 7.4 which is the lowest on that test. Any idea why this is?? THANKS!
Ph ?
- Thread starter carld
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