Thanks Ben. I'm not at all inclined to drain half the pool due to risk of floating and cost of the water. I'm even less inclined to "slime" the pool over the winter.

So, I've begun to think maybe I'll just keep the CYA high and maintain FC levels accordingly high as well. I've read here about some of the benefits of that approach. The one significant downside seems to be that if you slip-up and get an algae bloom, it takes an enormous amount of chlorine to kill it.

One question: my daily chlorine loss is right at 2.2 to 2.3 ppm (after two weeks of careful tracking). That strikes me as a little high. Is that normal with CYA>100? What would my daily usage be at CYA=50-60? I'm in North Texas and my pool gets 7-8 hours of direct sun per day. Water temps range from 84-92 in the summer. Thanks again.

Mike