An orange reading just means the chlorine is really high. This chart can help you to interpret off the scale OTO readings:> http://pool9.net/oto-chart/
Do you need to add Borax daily? That seems very unlikely. With a chlorine reading over 5ppm, (over 10ppm with a Taylor kit), pH readings will be inaccurate. But, you can dilute the sample. Mix one part pool water with an equal part of distilled water and then run the pH test with that mix.
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