Using my aquarium test kid, I find that the pH of the water is 7.8. When I use the calibrated Apera PC60-z the results indicate that the pH is 6.6-6.7. I have calibrated twice and tested the water twice with similar results.
Why the great discrepancy? Is one more accurate than the other?
Using my aquarium test kid, I find that the pH of the water is 7.8. When I use the calibrated Apera PC60-z the results indicate that the pH is 6.6-6.7. I have calibrated twice and tested the water twice with similar results.
Why the great discrepancy? Is one more accurate than the other?
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