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Actually, I have only had the tub for about 6 weeks, so the water is fairly new. I did give it a little extra chlorine last night. To be honest, I have not done much more than add chlorine every couple of days. The saleperson told me not to worry about much else. It has an ozonater, isn't that supposed to keep the chemicals in check? I will check the water readings and post them. Thanks guys.
Here's another thing to factor in: How well trained is your dealer's staff in water chemsitry, spa maintenance, and trouble shooting??? This plays a HUUUUUGE role.