Pool Closing

When summer winds down and temperatures start dropping in Wisconsin, it is time to prepare your pool for winter. Spending a little time and money now will reduce the work that is needed in the spring to reopen your pool and will also help prevent unnecessary damage and wear on your pool and equipment.

Below are some instructions that Allied Pools recommends to ensure you and your pool are ready for winter. Be sure to also read our instructions for winterizing and storing your pool's filter system. If you have any questions or need to purchase additional chemicals for your pool, stop by our store in West Allis and speak with our staff.


  1. Balance hardness to proper range of 150-350 ppm
  2. Adjust alkalinity to proper range of 80-120 ppm
  3. Adjust pH to proper range of 7.2-7.6
  4. Remove ladder or entry system
  5. Vacuum pool thoroughly (if algae exists in your pool, you must follow Killing Algae instructions before closing your pool)
  6. Add the required amount of closing chemicals based on size of pool and chemical system. For Nature 2 and chlorine-based systems, use a 20K or 10K winter kit depending on the pool size. Gentle Swim - see below
  7. Run the filter system for 24-48 hours
  8. Drain your pool 6 to 8 inches below your return jet (be sure to avoid draining pool on lawn)
  9. Tie or anchor the appropriate number of winter pillows in the center of your pool
  10. Cover pool with your winter cover making sure it will be secure in high wind

Click the following instructions on winterizing your specific filter system and read carefully: