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Also I HIGHLY recommend the Taylor testing kit in place of test strips.
Lips that touch test strips will never touch mine!No, that isn't quite right, but I haven't had any test strips in a year
Am I being stupid with this and just test it using incandesent indoor lighting?Thanks!
While this is true, Chlorine is less likely to raise your pH than Bromine. So its a good thing it is still 80% effective since you are much more likely to have high pH.
How would something with a ph of around 4 raise ph??While it isn't as acidic as chlorine, it certainly is still acidic!!
Your chemical reps are either ignorant to the facts of misleading you. I would guess it's the latter.
Here is your assigment for the weekend At noon on a sunny day, take a reading out near the spa, decide on what it is, walk quickly into the house, look at it again, would you judge the same reading?