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In The Swim Pool Closing Kit - Winterizing Chemicals for Above Ground and In-Ground Pools - Up to 15,000 Gallons

4.7 out of 5 stars 16,963 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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$45.99 with 10 percent savings
List Price: $50.99
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Size: Deluxe
Style: Kit Only
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Purchase options and add-ons

Brand In The Swim
Item Weight 11.2 Pounds
Item Form Powder
Product Benefits Maintains clean, sanitized water and protects pool surfaces during winter closing, with reliable protection and easy application See more
UPC 729756923851

About this item

  • Convenient: In The Swim's Pool Winterizing and Closing Chemical Kit streamlines pool closing with all necessary chemicals included, saving time and chemical cost.
  • Safe and Reliable Protection: Our winter chemical kits provide reliable protection without the risk of compromising other pool winterizing chemicals or causing damage to pool surfaces.
  • Versatile for All Pool Sizes: Kits cater to pools of any shape and size. For in-between sizes, opt for the next size up. Multiple kits are available for pools exceeding 35,000 gallons.
  • Effective Oil Absorption: In The Swim's Winter Sorb absorbs 40 times its weight in oils, preventing waterline scum. Kits include 1 white or 2 blue sorbs.
  • Comprehensive Kit Components: Kit includes 1 Qt. Winterizer, 1 Qt. Winter Stain-Away, 2 Lb. Chlorine Free Pool Shock, 1 Winter Sorb, and 1 Winter Pool Floater.

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This item: In The Swim Pool Closing Kit - Winterizing Chemicals for Above Ground and In-Ground Pools - Up to 15,000 Gallons
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Product Description

ITS A+ Banner
Closing Kit 15

We Have Your Winter Chemical Needs Covered

In The Swim Closing Kit

Cal-Hypo Pool Shock

Chlorine-Free Pool Shock

Winter Algaecide

Stain Away

Customer Reviews
4.7 out of 5 stars 16,963
4.6 out of 5 stars 14,781
4.7 out of 5 stars 3,098
4.7 out of 5 stars 736
4.2 out of 5 stars 688
Price
$45.99 $62.99 $71.99 $22.99 $24.99
Product Size
For pools up to 15k gallons 12 x 1 Pound Bag 12 x 1 Pound Bag 1 Quart 1 Quart
Purpose
Winter water protection Chlorinating Water Sanitizing Control algae growth Prevent surface stains
Main Ingredient
Kit Calcium Hypochlorite Potassium Peroxymonosulfate Copper Sulphate Pentahydrate Hydroxyethlidene
Ingredient %
Varies by chemical 68% 38% 11.8% 13%
Application
Varies by chemical Pre-dissolve Apply directly to water Apply directly to water Apply directly to water
Features
Streamline pool closing Versatile, fact-acting shock Various water-compatible Designed for cold temperatures May lighten existing stains

Product information

Brand In The Swim
Item Weight 11.2 Pounds
Item Form Powder
Product Benefits Maintains clean, sanitized water and protects pool surfaces during winter closing, with reliable protection and easy application
UPC 729756923851
Number of Items 1
Unit Count 1 Count
Product Dimensions 13.6 x 8.8 x 8.6 inches
Item Weight 11.24 pounds
Manufacturer ALLCHEM INDUSTRIES, INC.
ASIN B002WKKEU2
Item model number KWD150001AE
Customer Reviews
4.7 out of 5 stars 16,963 ratings

4.7 out of 5 stars
Best Sellers Rank #15,380 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#20 in Pool Maintenance Kits
Is Discontinued By Manufacturer No

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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In The Swim Pool Closing Kit - Winterizing Chemicals for Above Ground and In-Ground Pools - Up to 15,000 Gallons


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Price-10% $45.99
List:$50.99
$69.99$31.99$24.99$24.99-33% $19.99
Typical:$29.99
Delivery
Get it as soon as Monday, Apr 14
Get it as soon as Tuesday, Apr 15
Get it as soon as Tuesday, Apr 15
Get it as soon as Tuesday, Apr 15
Get it as soon as Tuesday, Apr 15
Get it as soon as Tuesday, Apr 15
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Important information

Safety Information

Store the chemicals in a secure location where children or pets cannot access them, as they may be toxic if ingested.

Directions

1. Clean the Pool; 2. Balance the Water; 3. Shock the Pool and Add Algaecide; 4. Add an In The Swim Non-Chlorine Winterizing Kit; 5. Lower The Water Level

Customer reviews

4.7 out of 5 stars
16,963 global ratings

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Customers say

Customers find the pool winterizing kit easy to use with clear instructions, and report that their water remains crystal clear throughout the season. Moreover, the product works better than other kits, includes everything needed, and offers significant time and money savings. Additionally, they appreciate its effectiveness in winterizing and closing pools, and one customer notes it's less toxic than traditional chlorine and copper treatments.

AI-generated from the text of customer reviews

520 customers mention "Ease of use"509 positive11 negative

Customers find the pool closing kit easy to use, with clear instructions and simple installation.

"...Saves me a lot of time and money when opening my pool. And very easy to use with step-by-step instructions." Read more

"...to effectively close your pool for the winter, and the instructions are straightforward and easy to follow...." Read more

"...This product has good instructions and a couple of steps rather than just one chemical to dump in...." Read more

"...I will be using it again this coming year. Has simple instructions and everything needed for a successful DIY closing of a 10000+ gallon, inground..." Read more

392 customers mention "Water clarity"385 positive7 negative

Customers report that their pools remain crystal clear throughout the winter, with one customer noting that the chemicals effectively maintain water clarity.

"...year when I’m closing my pool when I open in the spring, my water is crystal clear. Saves me a lot of time and money when opening my pool...." Read more

"...winterizing chemicals worked wonders; after using this kit, my pool was crystal clear when I opened it in the spring...." Read more

"...last year and once I added the pool opening chemicals I had a crystal clean pool." Read more

"...When the pool season returns, the water is already prepared for ease of opening for summer...." Read more

384 customers mention "Works well"358 positive26 negative

Customers find that the pool closing kit works well, particularly when following instructions, and performs better than other kits.

"Good price and works well" Read more

"This is the 2nd year in a row I've gotten this and it's worked great! Uncovered our pool 2024 summer and it was just clear and cleaned as promised!..." Read more

"repeat customer. works like a charm. in the spring its like you never closed the pool at all. super easy to use. very clear instructions" Read more

"...It definitely works. I am using it again this year." Read more

332 customers mention "Kit quality"321 positive11 negative

Customers are satisfied with the kit, noting that it contains everything needed for pool maintenance.

"...I love that it includes all the necessary items, from algaecide to winterizing shock, which took the guesswork out of the process...." Read more

"Satisfied with product" Read more

"Nice product, easy to use." Read more

"Good kit. Will know how it worked when I reopen the pool." Read more

289 customers mention "Value for money"260 positive29 negative

Customers find the pool closing kit offers good value for money, providing significant time and cost savings.

"...Saves me a lot of time and money when opening my pool. And very easy to use with step-by-step instructions." Read more

"Good price and works well" Read more

"...Thank you got being budget friendly, and making this easy to do for our 18 W x 54 H on ground pool." Read more

"...Good price , easy to open and use. Over all happy with it so far." Read more

159 customers mention "Pool closing"159 positive0 negative

Customers find the pool closing kit effective and easy to use, providing everything needed for both above ground and in-ground pools.

"...Makes shutting down the pool a breeze and opening it back up less stressful." Read more

"...Has simple instructions and everything needed for a successful DIY closing of a 10000+ gallon, inground pool." Read more

"Seemed simple enough to use and close the pool with this year" Read more

"Good for closing pool" Read more

98 customers mention "Winterizing"87 positive11 negative

Customers find this winterizing kit effective and easy to use, with one customer noting it includes everything needed for pool maintenance.

"...The winterizing chemicals worked wonders; after using this kit, my pool was crystal clear when I opened it in the spring...." Read more

"...No staining, no damages, and lasted great in Arkansas's bipolar weather of temperature dropping low to single digits...." Read more

"...The kit has everything you need, and it makes winterizing our pool super easy...." Read more

"The In The Swim Pool Closing Kit provides everything needed to winterize both above-ground and in-ground pools up to 35,000 gallons...." Read more

81 customers mention "Chemical quality"64 positive17 negative

Customers are satisfied with the pool winterizing chemicals, noting that they keep the water clear and free from algae, with one customer mentioning they are less toxic than traditional chlorine and copper treatments.

"...I love that it includes all the necessary items, from algaecide to winterizing shock, which took the guesswork out of the process...." Read more

"...uncovered we just turned our sand filter on and went right in without the algae or high chlorine...." Read more

"...1/2 of this water is rain and snow melt." Read more

"...Chlorine was completely dissolved by the time I opened the pool...." Read more

Buy this!!!
5 out of 5 stars
Buy this!!!
A must buy! First year owning a pool so I order the kit. When I pulled the cover this spring I was amazed. 1/2 of this water is rain and snow melt.
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Top reviews from the United States

  • Reviewed in the United States on February 19, 2025
    Style: Kit OnlySize: SuperVerified Purchase
    I purchased this kit every year when I’m closing my pool when I open in the spring, my water is crystal clear. Saves me a lot of time and money when opening my pool. And very easy to use with step-by-step instructions.
  • Reviewed in the United States on April 1, 2025
    Style: Kit OnlySize: DeluxeVerified Purchase
    Good price and works well
  • Reviewed in the United States on October 28, 2024
    Style: Kit OnlySize: DeluxeVerified Purchase
    The In The Swim Pool Closing Kit is a must-have for anyone looking to winterize their above-ground or in-ground pool! This kit contains everything you need to effectively close your pool for the winter, and the instructions are straightforward and easy to follow. The winterizing chemicals worked wonders; after using this kit, my pool was crystal clear when I opened it in the spring. I love that it includes all the necessary items, from algaecide to winterizing shock, which took the guesswork out of the process. If you want a hassle-free way to protect your pool during the colder months, I highly recommend this winterizing kit!
  • Reviewed in the United States on December 13, 2024
    Style: Kit OnlySize: DeluxeVerified Purchase
    We felt the value of this far surpassed what we had purchased in the past from a pool store. We were never overly impressed with the results we saw in the spring with the prior product. This product has good instructions and a couple of steps rather than just one chemical to dump in. We will see how it worked when we open our pool up in the spring.
  • Reviewed in the United States on March 17, 2025
    This is our second year using this product and it does the job. Makes shutting down the pool a breeze and opening it back up less stressful.
  • Reviewed in the United States on March 4, 2025
    Satisfied with product
  • Reviewed in the United States on April 1, 2025
    Style: Kit OnlySize: DeluxeVerified Purchase
    Great closing kit. I will be using it again this coming year. Has simple instructions and everything needed for a successful DIY closing of a 10000+ gallon, inground pool.
  • Reviewed in the United States on November 22, 2024
    This is the 2nd year in a row I've gotten this and it's worked great! Uncovered our pool 2024 summer and it was just clear and cleaned as promised! No staining, no damages, and lasted great in Arkansas's bipolar weather of temperature dropping low to single digits.
    When uncovered we just turned our sand filter on and went right in without the algae or high chlorine. Thank you got being budget friendly, and making this easy to do for our 18 W x 54 H on ground pool.
    One person found this helpful
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