Question? If we abide by the TFP theories and practices ( which I use personally and very thankful for) How can a pool cleaning company only balance, test once a week, and only add chlorine once a week. I live in texas and even with cya at 60 I have to add chlorine to meet the min level. Just seems like the pool store,maintenance, and sales just want us to buy every product on the market and pay $175 a month....Sorry for the ramble but question is..How do they only co.e once a week and justify it?