Draining 4 inches of water a week for 8 weeks removes more cyanuric acid than most pool owners realize. This post walks through the exact math for a 20,000-gallon pool and tells you how much stabilizer you will need to add back once the draining stops.
Draining your above-ground pool to the wrong level before winter is one of the most common closing mistakes - and one of the easiest to avoid. The correct water level to leave in an above-ground pool is just below the skimmer opening, typically 4 to 6 inches below the skimmer mouth. This article explains why that number matters, what happens if you go too low or too high, and how to close correctly without second-guessing yourself.
