America's #1 Direct Source for Pool Supplies!

1.800.288.7946 Experts Available 24/7

Call Cart
one day delivery

1 Day Delivery

Your ZIP Code: 98109 Seattle Change Location

To Seattle Change
Celebrating 35+ Years!
Source / Promo Code:WYAARUNKEdit
cart overlay

    Showing 0 of 0 item View All

    Estimated SUBTOTAL* :  $0.00

    *Excludes taxes, handling fee, and EZ Pay Service Fee, if applicable.
    Source Code:WYAARUNK Edit

    Closing Kits and Chemicals

    • bvseo_sdk, java_sdk, bvseo-3.1.0
    • CLOUD, getContent, 6ms
    • bvseo-msg: The resource to the URL or file is currently unavailable.;

    In The Swim Knowledge Pool: Closing Kits & Winter Chemicals

    In The Swim's Dr. Pool

    In The Swim Winter Pool Chemicals

    During the long off season in the snowbelt or for anyone that will winterize their swimming pool, the water is not being circulated, filtered or sanitized. This makes your pool the perfect breeding ground for algae and stains. Our Winter Pool Closing Kits have been specially formulated to provide you with the exact combination of powerful winterizing chemicals to help ensure a swift opening next spring. Our most popular winter pool chemicals, at low bundle prices!

    Pool Winterization Kits

    In The Swim Pool Closing Kits are pre-measured packs of winter pool chemicals, sized to fit your pool. Includes our powerful Chlorine-Free Shock, which won't interfere with the Winter Algaecide and Winter Stain Away treatment. Every winter kit also includes an oil absorbent sponge, the Winter Sorbâ„¢, and a chlorine free Winter Floater filled with a time release sanitizer for long lasting protection. Our pool winterizing kits have the right stuff to winterize your pool water, while protecting your soft and shiny pool surfaces with chlorine-free winter chemicals. 

    Non-Toxic Pool Antifreeze

    Pool Antifreeze is safe to -50 F - when using 1 gallon for each 10 ft of pool pipe, or much less if the pipes have been blown out or drained. Our non-toxic Pool Antifreeze can be poured into skimmers or with a funnel and hose, it can be fed into pool return lines or cleaner pipes. Safe for all pipes and hose. Pour on top of your skimmer plug to protect the skimmer well against freezing water. Non-toxic formula will not affect water balance and is safe for swimmers. 

    Pool Magic

    Natural Chemistry Pool Magic is a specially formulated enzyme blend that works in warm and cold pool water. We specifically recommend it for pools that have a history of opening up green each spring, especially for pools with mesh safety covers. Combats the fine silt and algae growth common with mesh pool safety covers. One treatment of Pool Magic Spring & Fall when closing and your spring opening will be so much easier. Also available is Pool Magic Spring & Fall + PhosFree, for pools with a history of algae blooms. 


    The WinterPill is a concentrated enzyme formula packaged inside of a convenient floating ball. Just pierce the ball with the included push-pin, and drop it in the pool during closing. Slow-release of enzymes and clarifiers fight suspended matter, oils and organics, and prevents stains and algae blooms. Each WinterPill treats up to 30,000 gallons, and when used on smaller pools, you will be amazed at the effectiveness, when the cover comes off next spring.

    Close your swimming pool the right way with quality In The Swim pool closing chemicals and winterizing kits. If you have any questions on any of our winter pool chemicals, call our pool winterization experts at 1-800-288-7946, or send me an email!