In The Swim - Pool Chemical Winterizing Kits

Item No. MASTER-SKU444
Item No. MASTER-SKU444
In The Swim  Pool Chemical Winterizing Kits
In The Swim  Pool Chemical Winterizing Kits
In The Swim  Pool Chemical Winterizing Kits
In The Swim  Pool Chemical Winterizing Kits In The Swim  Pool Chemical Winterizing Kits In The Swim  Pool Chemical Winterizing Kits
$32.99 - $69.99
Specially formulated pool winterizing kits will not stain or bleach vinyl or plaster pools! Pre-measured for your specific pool size. More Details

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Specially formulated pool winterizing kits will not stain or bleach vinyl or plaster pools! Pre-measured for your specific pool size.
  • Unlike chlorine-based winter kits that reduce the effectiveness of algaecide and other pool winterizing chemicals and can stain, bleach or damage pool surfaces, Our chemical kits won't damage your pool during winter.
  • In The Swim winter kits include a slow-release winter floater filled with a powerful non-chlorine oxidizer.
  • Our unique winter pool floater removes carbon dioxide, one of algae's primary food sources.
  • No staining, no bleaching... just clean, sanitary water. Kills micro-contaminants, algae and pathogens.
  • Includes pool winterizing instructions.
  • Pool water temperature should be at 65 degrees F or below before winterizing.
  • Not for use in winterizing pools using a biguanide based sanitizing system.
  • Please Note: Winter Sorb may vary

Make sure that the pool water is cleaned, balanced before adding the winterizing kit to the water. It is recommended to close the pool when the water temperature is less than 65 degrees.

Pool Closing Instructions

1. Clean the Pool

Clean-up next spring will be greatly reduced if the pool is thoroughly cleaned before closing it in the fall. Be sure to vacuum the bottom and skim the surface before proceeding to the next step.

2. Balance the Water

Balance the components of the pool the same way you would if you were maintaining your pool for the swimming season. All components should be within their desire ranges; add the appropriate corrective chemicals to bring levels into the required range.

3. Shock the Pool and Add Algaecide

Lithium Shock or Chlor-Free is recommended for shocking. Pool Shock can also be used, but is not recommended for vinyl liners because of the possibility of bleaching the liner In The Swim Algaecide or Algaecide 50 is recommended for preventative maintenance of algae growth over the winter months. Add the recommended dosage of algaecide and shock treatment while the pool filter is circulating the water.

4. Add an In The Swim® Non-Chlorine Winterizing Kit

To make winterizing simple and economical, we suggest one of the Winterizing Kits. Our kit comes complete with Winterizing Inhibitor, Winterizing Stain-Away, Chlor-Free Shock and a float containing a non-chlorine oxidizer. (Step #3 may be skipped if using a Winterizing Kit)

5. Lower The Water Level

Lower the water level in the pool to 4-6 inches below the skimmer. In The Swim® suggests taking all above-ground pool filter equipment indoors for the winter to prevent cracking from freezing water. In-ground pool filters require that the lines be drained, plugged and filled with anti-freeze. Be sure to follow manufacturer's guidelines and instructions for protecting your underground pool lines.

6. Drain and Plug the Lines

Winter climate pools require the lines to be drained, plugged, and filled with anti-freeze, or blown-out with high air volume. Above ground pools can plug the wall fittings, disconnect the hoses and remove system drain plugs. First, the valves must be closed. The next step is to drain or blow out the lines. Plug them with Winterizing Plugs. Proceed to fill the skimmer line with Anti-Freeze. In the spring, the Anti-Freeze can be vacuumed out or drained into the pool since it is a non-toxic formula. Be sure to follow manufacturer guidelines and instructions for protecting in-ground pool lines.

Place a Skimmer Guard into the skimmer to prevent costly damage from ice. The Skimmer Guard acts as an ice compensator, and will prevent your skimmer from cracking once the rain/snow water accumulates in the skimmer.

7. Covering the Pool

Taking the time to correctly cover the pool tightly is the single most important step to opening a clean pool in the spring. Be sure to have a cover pump, connected to an outlet and a discharge hose, to remove rain water and sn

Ordering a kit larger than your pool size will help protect from winter cover problems. Small Kit: for pools up to 7,500 gallons. Deluxe Kit: for pools up to 15,000 gallons. Super Kit: for pools up to 35,000 gallons.

In The Swim Winter Pool Chemicals

We sell more winter chemical kits than any other online retailer. Regardless of the size of your pool, we have the pool winterizing kits to meet your needs. Pre-measured for the size of your pool so every pool owner can easily close the pool with the right winter pool chemicals, at the right price.

All of our In The Swim Pool Winter Kits Include:

Chlorine-free Shock

Our chlorine-free shock is a powerful oxidizing agent, but is non-chlorine, and will never harm your pool surfaces or your pool cover. Chlorine Free winter shock also dissolves faster than chlorine, and maintains greater efficacy at a wider range of pH level. Our premium chlorine-free shock that helps burn off any remaining impurities and won't reduce the effectiveness of other chemicals.

Time-Release Winter Floater

Our exclusive time-release winter chemical floater discharges a non-chlorine oxidizing agent into your pool water for months after it's been covered. Not only does this winter pool floater sanitize your pool water, but also works to remove carbon dioxide from the water - eliminating one of algae's primary food sources. Unlike chlorine tablet pool floaters, our non-chlorine winter floater will never stain your plaster or vinyl.

Winter Stain Away

Specifically formulated for closing your pool, Winter Stain Away helps eliminate stain-causing metals and minerals that can leave your pool with costly liner stains or hard-to-clean waterline build-up. Winter stain away sequesters metals - keeping them tied up in solution, to prevent them from precipitating out during winter. Works wonders on mesh safety covered pools, and keeps working all year round to help prevent metal and mineral stains.


The final step to preventing algae next spring is to pour in our special winter pool algaecide. Dr. Pool's own proprietary polymer blend combines in perfect harmony with the other items in your pool winterizing kit. When used in conjunction with our other pool closing chemicals our Winterizer Algaecide is the perfect "knock-out" punch against algae. Lasts all winter long, even into a warm spring.

Winter Sorb

Made exclusively for In The Swim, the Winter SorbTM can absorb up to 40 times its weight in residual suntan lotions and body oils to prevent grease, grime and waterline scum. Oils provide a low grade food source for algae, and can clog up the waterways, easily combining with free chlorine to create chloramines. Just toss the Winter Sorb into the pool before covering to absorb floating oils.

Make the smart choice this autumn, buy your pool winterizing kit, America's #1 Direct Source for winter pool supplies!

Product Type: Pool Chemical
Chemical Type: Kit
Kit Type: Closing
Manufacturer: In The Swim

* Freight charges may apply on oversized products. Shipping charges may apply on select products such as sand, salt, and D.E. Discounts do not apply toward shipping, handling and freight fees, taxes, the purchase of select items, or previous orders. Prices are subject to change without notice.