We totally disagree with that. If your CYA is higher and you don't keep your chlorine in the range per the chart, you will ultimately end up with algae. We see this all the time. People come on the forum and tell us that they have always used the tabs and have always kept their chlorine between 1-3 (or whatever) and now all of a sudden, they can't hold a chlorine reading or are getting algae and they can't figure out why has always worked is no longer working.

The reason is simple. They have let their CYA build up to levels that get to a point where it takes higher chlorine levels to keep the pool sanitized and algae-free. But, they don't (and most of the pool stores don't either) understand that chart. Plus, think about it. What incentive does a pool store, who is in business to make money, have to give good advice that makes pools basically maintenance-free? What would that do to their sales?