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    Pool Chemical Winterizing Kits

      Pool Chemical Winterizing Kits is rated 4.8147 out of 5 by 448.
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    Free 1-Day Delivery Available!

    To: Ashburn

    Order before 4pm CT to receive free 1-Day Delivery

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    SPECIALLY FORMULATED POOL WINTERIZING KITS WILL NOT STAIN OR BLEACH VINYL OR PLASTER POOLS!
    • Unlike chlorine-based winterizing pool chemical kits that reduce the effectiveness of algaecide and other pool winterizing chemicals and can stain, bleach or damage pool liners, In The Swim's winter chemical kits won’t damage your pool during winter.
    • In The Swim's non-chlorine winterizing kits contain a slow-release winter floater that releases a powerful non-chlorine oxidizer to keep your pool fresh all winter long.
    • Our unique winter pool floater removes carbon dioxide, one of algae's primary food sources.
    • No staining, no bleaching... just clean, sanitary water. Our powerful non-chlorine winter pool shock kills micro-contaminants, algae and pathogens.
    • All winter pool kits are pre-measured for your specific pool size. Ordering a larger winterizing kit than your pool size will help protect from winter cover problems.
    • All winter pool kits include complete winterizing instructions.
    • Not for use in winterizing pools using a biguanide based sanitizing system.
    • Ensure peace of mind this fall with a top quality non-chlorine winterizing kit from In The Swim®.
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      • Item: # W1000 Small Pool Closing Kit $19.99

        FREE 1-Day Delivery

        When you order before 4pm CT

        Pool Winter Chemical Kit, Small - for closing pools up to 7,500 gal.

        1 qt. Pool Winterizing Inhibitor 
        1 qt. Pool Winter Stain-Away 
        1 lbs. Chlorine-free winter pool shock 
        1 Winter Pool Floater - 1.2 lbs. "non-chlorine" winter oxidizer
        1 Winter Sorb™, oil absorbent winter chemical sponge

      • Item: # W1015 Deluxe Pool Closing Kit $29.99

        FREE 1-Day Delivery

        When you order before 4pm CT

        Pool Winter Chemical Kit, Deluxe - for closing pools up to 15,000 gal.

        1 qt. Pool Winterizing Inhibitor
        1 qt. Pool Winter Stain-Away
        2 lbs. Chlorine-free winter pool shock
        1 Winter Pool Floater - 2.5 lbs. "non-chlorine" winter oxidizer
        1 Winter Sorb™, oil absorbent winter chemical sponge

      • Item: # W1035 Super Pool Closing Kit $43.99

        FREE 1-Day Delivery

        When you order before 4pm CT

        Pool Winter Chemical Kit, Super - for closing pools up to 35,000 gal.

        1 qt. Pool Winterizing Inhibitor 
        1 qt. Pool Winter Stain-Away 
        3 lbs. Chlorine-free winter pool shock 
        1 Winter Pool Floater - 4 lbs. "non-chlorine" winter oxidizer
        1 Winter Sorb™, oil absorbent winter chemical sponge

      • Product Description
      • Customer Review
      • MORE INFO

      In The Swim sells more winter chemical kits than any other online retailer. We carry a range of pool chemical winterizing kits to prevent algae blooms and protect your pool after winterization. Regardless of the size of your pool, we have non-chlorine pool winterizing kits to meet your needs. With our pool closing kits, your winter pool chemicals are pre-measured for the size of your pool so even the least experienced pool owner can easily winterize their pool. Plus, our winter pool kits are as affordable as they are effective so opening your pool will be as easy as it was to close the pool.

      You don't have to skimp on your winter pool chemicals this year, get more bang for the buck with our low prices and fast shipping. If you find a lower priced winter pool closing kit, with as much powerful, germ-fighting efficiency as ours, check the label! Our custom designed winter pool chemical kits are designed to keep your pool and your wallet protected this winter.

      Make the smart choice this autumn, buy your pool winterizing kits from In The Swim, America's #1 Direct Source for winter pool supplies!

      Rated 5 out of 5 by from EASY EASY I have used this product for 3 or 4 years with NO problems. This past Spring however I was surprised when opening the pool there was a terrible stain and LOTS of algae!! I was disappointed as I had NEVER had this problem before with this product. The algae cleaned up fine but the stain has taken most of the summer to work on and trying to get rid of... still a slight stain but after ALOT of elbow power it is slowly coming off !!! However I am going to try this product again as I say I never had a problem before with it...so who knows maybe the package I got last year wasn't mixed quite to par !!! I DO recommend it !
      Date published: 2011-08-23
      Rated 4 out of 5 by from Good Item at a Fair Price I had success in the past with In The Swim's opening kit, so I figured I would try again, but this time with a closing kit. Too early to tell how effective it is, I wont know that until May, when I open the pool. Attractive price is somewhat misleading, as you get dinged for about $10 for 'handling'. Do your consumers a favor - charge the price you need to get without having to 'add' charges at the conclusion of the sale. Aside from this "fee", the item was shipped quickly, and even included some tips of pool closing (I have done this many times, but since I was dealing with new chemicals, this certainly didnt hurt).
      Date published: 2014-09-22
      Rated 5 out of 5 by from Pleased for many years I was reading some of the other reviews and someone mentioned when they opened their pool in the spring it was full of algae. Usually in our area we tend to have a super warm spell in late Feb. or early March. I pull the winter cover back & pour 2 gallons of liquid chlorine in to prevent algae growth between that time & opening when it is usually in May. I use as a rule of thumb that when the outdoor temp. reaches 70 degrees or more that the winterizing kit is about gone & the algae starts to grow. Algae loves warm, dark, moist places to grow & that is the pool with a winter cover on it. Anyway, this is my method to prevent algae & it works every year. I highly recommend buying In The Swim Winterizing Kit!
      Date published: 2013-09-03
      Rated 4 out of 5 by from Quality winterizing kit This kit is great. It is a one stop shop to close your pool. It is super simple to use and does a great job. This spring we opened up the pool in hours because of the good condition of the water. The only concern is the chemical float. Make sure you hold it upright until it fills with water so that it floats in the proper manner and does not float on its side. Other wise this is a solid value.
      Date published: 2007-09-01
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      Instructions
      Winter Pool Chemical Kit Use Instructions:
      • Before Closing the Pool, remove all debris.
      • Kill any algae, brush and vacuum from pool.
      • Adjust pH to 7.2-7.4, and chlorine level to 2-3ppm.
      • Add Winter Pool Stain Preventer; follow label instructions.
      • Add Winter Pool Algaecide; follow label instructions.
      • Add Winterizing Non-Chlorine Shock, according to label.
      • Lower water level in pool to proper level for winterizing.
      • Poke holes in Winter Pool Floater, place in the pool.
      • Place the Winter Sorb in pool, to soak up oils.
      • Cover pool quickly, before debris blows in the pool.
      • Winterize your pool plumbing and equipment.
      What Size Is My Pool (Gallons)?
      In Ground Swimming Pool Gallonage Chart (rectangle pools)

      Average Pool Depth
      Pool Size5 ft.6 ft.7 ft.8 ft.
      10x207,5009,00010,50012,000
      12x209,00010,80012,60014,400
      12x2410,80013,00015,00017,300
      14x2814,70017,60020,50023,500
      15x3016,90020,30023,60027,000
      16x2414,40017,30020,10023,000
      16x3219,20023,00026,80030,600
      16x3621,60025,90030,20034,500
      18x3624,30029,20034,00038,800
      18x4027,00032,40037,70043,100
      20x4030,00036,00041,90047,900
      25x4542,00050,50058,90067,300


      Above Ground Swimming Pool Gallonage Chart

      Pool Depth
      Pool Size48 in.52 in.
      12' Round3,5004,000
      15' Round5,5006,000
      18' Round7,6008,300
      21' Round10,00011,000
      24' Round14,00015,000
      27' Round17,00019,000
      28' Round18,50020,000
      30' Round21,00023,000
      12x24 Oval8,0008,500
      15x24 Oval9,30010,000
      15x30 Oval12,00013,000
      16x32 Oval14,00015,000
      18x33 Oval16,00017,000
      21x41 Oval23,00025,000


      If your pool size is not listed above follow the instructions below to determine how many gallons of water your pool holds:

      Average Depth

      It is important to determine the Average Depth because it will be used in one of the equations below to determine the total gallons of your pool.

      Deep End (feet) + Shallow End (feet) ÷ 2 = Average Depth

      Now use one of the easy equations below to find your pool’s gallon capacity.

      Rectangular or Square
      Length (feet) x Width (feet) x Average Depth x 7.5 = Total Gallons

      Circular
      Diameter (feet) x Diameter (feet) x Average Depth x 5.9 = Total Gallons

      Oval
      Long Diameter (in feet) x Short Diameter (in feet) x Average Depth x 5.9 = Total Gallons

      Kidney or Free Form
      Long Diameter (in feet) x Short Diameter (in feet) x Average Depth x 5.9 = Total Gallons

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