Pool Closing Chemical Checklist

​How to Close Your Pool

  1. It is strongly recommended to have your water professionally checked a few days prior to your scheduled closing date. This will give adequate time to circulate any chemicals needed to balance pool water. Bad water chemistry (PH, ALKILINITY, CALCIUM HARNEDSS) can highly impact your pool surface.
  2. Chlorine/Sanitizer levels are highly important. Shocking the pool 24 hours prior to closing will help insure a crystal clear pool in spring. Using liquid chlorine at a rate of 2-3 gallons per 10,000 gallons will bring levels high enough to last the winter. Using dry shock at a rate of 1-2 bags per 10,000 gallons will also be adequate. Circulate shock for 24 hours with the pump on.
  3. Shocking the pool 24 hours before closing will help ensure a longer lasting cover. It is not recommended to shock the same day as cover installation, the chlorine gasses will be trapped between dead spaces under the cover and will break down your winter cover.
  4. Algaecide is also recommended prior to pool closing. This can be done same day and does not require much circulation. One gallon of pool winterizer treats up to 25,000 gallons of water. If you do not utilize the entire gallon you can keep it in a cool, dry place and use the remaining for spring startup. We have also found that adding a small amount of algaecide on top of pool cover helps keep algae growth down and can be a deterrent for birds/ducks from staying on cover.
  5. Pools that have heaters must add a stain and scale control. It is safe to add this normally through the skimmer about a week before closing if at all possible. You can add this product a few days before or even the day of, as long as your filter equipment is still hooked up. Do not add this product the same day as hocking. The product conditions the inside components of your heater and strips all scale buildup the heater and collected throughout the season. It also protects the heat exchange which is a very high ticket item. Save some money!
  6. Pools that utilize a salt system are required to use a cell cleaning product that conditions and cleans your salt cell. Pool Salt Magic is also recommended and helps keep organic waste buildup in your pool.
  7. We also recommend an enzyme product most commonly used in a "pill" form for closing. It is a slow releasing chemical that helps eliminate inorganic material buildup and allows your sanitizer to work all winter season insuring a crystal clear pool in spring.

*Wind Surf & Sail Pools, Inc. is not responsible for any damages that may occur due to following this guide. These are suggestions and helpful hints. This guide may not apply to all above ground pools.

The Basics of Pool and Spa Water Chemistry
Aboveground Pool Closing Checklist

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Thursday, 13 August 2020