Q. We purchased a home three years ago with a 20-by-40-foot, vinyl-lined pool. The liner, which was a beautiful dappled-blue print on the sides and bottom, has bleached white under the water line. We ...

All the info I can find these days says "drain and refill the pool" to lower the cyanuric acid level. However, that course of action is unacceptable. My pool is 34,000 gallons (in-ground), and was ...