Knew tooth is 15 Posted November 1, 2020 Share Posted November 1, 2020 Anybody have questionable ph readings with API kit? Tanks and tap are at 8.2-8.4 with high ph reagent, but paper/plastic strips indicate 7.0. Fish and plants all doing well over a couple of months. Never had lower pH reading with kit. Quote Link to post Share on other sites
Daniel 5,047 Posted November 1, 2020 Share Posted November 1, 2020 All the hobbyist level test kits are only fuzzily accurate. But they are useful when it comes to trends. I usually don't believe the actual number. As you say, your fish are happy and are the best indicators of water quality. You can always test against a buffer of known pH if an exact number is needed. Quote Link to post Share on other sites
Administrators Cory 2 Posted November 1, 2020 Administrators Share Posted November 1, 2020 I bought some known solution to test, test strips I'm working on. If it seems like a decent video after I see results I may film something about it. My guess is like Daniel said, hobbyist grade test kits will be only so accurate and are better for monitoring changes in the aquarium and not such much exact numbers. Quote Link to post Share on other sites
Knew tooth is 15 Posted November 1, 2020 Author Share Posted November 1, 2020 Thanks for putting these readings into perspective. I would have expected, though, readings within, AT THE VERY LEAST, half a log pH unit. The kit, which I really doubt but will confirm with standard buffer pH 7 (approx), should provide greater accuracy, particularly when one considers the expense. Quote Link to post Share on other sites
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