Andie, what might be happening on the CH test is that the 9 ppm cl are affecting the reagent's colors. Do the instructions for your test kit include a 'testing problems' section where this might be adressed? What kit are you using? There are a couple 'tricks' that can be used, but they depend on the kit you use. If you'd post these answers, I'll check with my kit's instructions, and get back to you Mon. In the mean time, put some baking soda in the pool, to raise the TA, when you get that up to level, add the borax - the baking soda will 'drag' the pH up, if you're pH is still low, add the borax. (Are you sure that the pH is 7.0?, if it's the bottom of the kit's range you might be lower and get the same result) If you need more help, just ask![]()
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