Absolutely not! Your dealer has insructed you on how to keep the water safe so that you dont sick or infected. Your water balance (ph, alkalinity, calcium hardness) is critical to the longevity of the spa surfaces and equipment not to mention bather comfort. You may want to test for other metals in the water which you would like to remove such as copper, iron, maganese etc. I hate it when I hear about dealers telling people all they to is add chlorine/bromine or nothing at all because the ozone is so good, RUBBISH. They are telling you what you want to hear so that you sign.