What Pool Chemicals & Accessories Do I Need for Winter?

A close-up image of shimmering pool water.

Like everything else in life, owning a pool in Connecticut has its ups and downs. Getting your pool ready for winter every year definitely qualifies as the latter.

Winter’s on the way, and if it’s your first year with a pool or you’ve never closed your own for the off-season, you may be at something of a loss to know what tool and chemicals you need. Winter pool chemicals can be confusing for sure, but at Brothers Pool we’re dedicated to keeping our customers educated. Take a look at our handy guide to closing your pool for winter, and then keep reading to get the full scoop on what pool chemicals and accessories you’ll need for the long winter ahead.

First: Balance the Water

Before you add any chemicals, you’re going to need to make sure your water is balanced in terms of pH, alkalinity, and other variables. Balancing your pool water may involve chemicals not necessarily unique to winterization. If you’re not sure how to test your pool water, bring in a sample to Brothers Pool and we can test it for you, and then recommend all the products you’ll need. What you need to test for:

  • pH: Your pool’s pH should be between 7.2 and 7.8.
  • Alkalinity: Alkalinity should be someone between 80ppm to 120ppm.
  • Water Hardness: Hard water is water with an abundance of calcium, which can build up in plumbing. Water without enough calcium, on the other hand, can leech it from the pool’s frame and structure, leading to wear. Make sure water hardness is up to snuff.
  • Chlorine: Even through winter, your chlorine levels should be around 1ppm to 3ppm.

Winter Chemicals

  • Algaecide: Even through winter, algae like green and mustard algae will take the opportunity to grow in your swimming pool. Algaecide is a safe, easy way to prevent that from happening.
  • Oxidizing Chemicals: In the form of shock or slow-dissolve oxidizing tablets, these chemicals keeps pool water clean over the summer by eliminating contaminants and organic waste.
  • Phosphate Remover: Phosphate remover lowers phosphate levels in the pool water, keeping water clear and preventing staining and odors. Phosphate remover is great for in-ground and above-ground pools alike, and makes opening the pool in spring easier.
  • Metal Remover: Metal remover eliminates heavy metals that have dissolved into the pool’s water, preventing discoloration, staining, and other problems.
  • Antifreeze: Exactly what it sounds like, pool antifreeze is a non-toxic compound that keeps pool water from freezing solid and expanding, lessening the risk of damage to the pool structure and plumbing.

Winter Accessories

  • Winter Pool Cover: The most important thing is a winter pool cover, to keep the pool water uncontaminated and unperturbed through the winter.
  • Pool Cover Anchors: This can include water blocks, corner bags, Pool Pillow Pals, and more, all to keep the cover secure and in place through the winter. A pool cover doesn’t do much good if the wind blows it away, after all.

These are the basics of winterizing your pool. If you feel comfortable doing the legwork yourself, come in to Brothers Pool’s retail location in Wallingford to get all the supplies you need. If you’d rather save yourself the trouble, Brothers also has pool closing services for the Connecticut area. Call (203) 265-5980 or give us a visit to learn more.


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Brothers Pool

250 Main Street. (RT 150)
Wallingford Connecticut 06492
P: (203) 265-5980
F: (203) 294-1601
E: info@brotherspool.com

Driving Directions

In Connecticut take I-91 North or South to exit 15. Take Route 68 West towards Wallingford and Cheshire. Turn left at the intersection of 68 and 150 (Main Street). Brothers Pool is about 1 mile on the left.

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Saturday: 9am - 5pm
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