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Just a quick question, I have read a lot on the use of chlorine, but little on bromine to sanitize the spa. Wondering what everyone thinks is the better options. The dealer that sold my wife the spa told her to use bromine. So I need a good explanation which one is better and why. Thank you...

Hi I'm new to the site, just wonder what pool calculator one is better. I checked out the one mentioned here, which looks great. I'm really looking for one for my iPhone. Any recommendation. Also which test kit is the easiest to use or are the all the same. thank you Sent from my iPh