PetSolutions: API High Range pH Test Kit

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Hi-Range pH Test Kit - Fresh or saltwater. Reads pH of 7.4 to 8.8.

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How do you LOWER IT, ???
How many drops do you add to lower it.?
How long do you WAIT until you test it again.?
Why are these videos not showing how to solve the problem….I can follow the instructions on the box, don’t need a video for that, just don’t know how to solve the issue.

sunflower