Chemicals

• Cleaning and adjusting the chemicals is the first step to winterizing your pool. Vacuum leaves and debris from the bottom of the pool. Add chemicals to bring the pH level between 7.2 and 7.6, alkalinity to between 80 to 120 ppm and calcium hardness between 180 and 220 ppm. Distribute chlorine shock to bring the chlorine level to 3.0 or greater, before adding winterizing algaecide.
  
  

Preparations

• Remove ladders, rails, ropes and cleaning hoses and store them inside away from freezing temperatures. Clean out and remove the skimmer and pump baskets. The water should not be drained completely from the pool, but for pools with a tile border, drain the water down below the tile to prevent cracking over the winter. Otherwise, the water level does not need to be lowered, unless recommended by your pool company.
  
  

Equipment

• Water left in your pipes and pool equipment may cause cracking from the expansion and contraction of freezing and thawing. To protect your pool equipment, drain and disconnect the pump, filter, heater and chlorinator. Remove return jet fittings from the pool and store them in the skimmer basket over the winter to keep them handy for opening the pool in the spring. All water should be drained and blown from the pipes leading to and from the pool and filtering system using a shop vac or air compressor. The lines and skimmer should be plugged to prevent water from entering the pipes. In climates with below freezing temperatures, pool water may freeze. An air pillow placed in the center of the pool beneath the cover compresses when the water around it freezes, taking the pressure off of the sides of the pool. Some pool manufacturers recommend adding non-toxic antifreeze to the pool or pipes. Check with your pool manufacturer’s recommendations.
  
  

Covers

• Covering the pool provides safety over the winter, preventing animals and family members from accidentally falling into the pool. It also keeps leaves and debris out of the pool water. A mesh safety cover is anchored securely and tightly over the top of the pool. These covers are strong enough to withstand weight should pets or children accidentally get into the pool area. Pool covers made of polyethelene or vinyl, are laid on top of the water extending over the sides of the pool. The cover is anchored in place by water bags positioned around the pool cover. Because the cover rests on top of the pool, rain water and snow accumulate on it and must be siphoned off throughout the winter and before opening the pool in the spring.