Most pool owners don't realize that the winter months, when the pool is closed, are just as important as the in-season months. Stagnant, non circulated water can be damaging throughout the winter. If your Ph rises too much it can create scaling. If your Ph drops too low it will turns the water acidic and slowly eats away at your plaster. The auto pump can fail causing the water level to be too high, cracking tiles once frozen. At Ace we want your investment protected at all times which is why we offer our "Winter Watch" program.