Pool Winterizing Closing Kit

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Models Considered

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Hours of Research

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Consumer Reviews Analyzed

A swimming pool maintenance never stops, especially in the cold months. An efficient winterizing kit will provide you with all the required elements for you to successfully seal the pool for winter, without worrying about algae or fungi present in the water when you prepare to reopen it in summer. We’ve gathered the best kits in one place to ease your selection process, so pick the one that best fits your needs.

Top 7 Pool Winterizing Closing Kits Comparison

Photo Product Name Pool compatibility Shock-treatment Stain-protection Winterizer Long-lasting effects Price
POOLIFE Kit ImageBest Overall
1. POOLIFE Kit
20.000 gallons 2 packs
see price
BioGuard Arctic Blue ImageBest for Small Pools
2. BioGuard Arctic Blue
12.000 gallons 1 pack
see price
In The Swim Kit Deluxe Bundle ImageEditor’s Choice
3. In The Swim Kit Deluxe Bundle
15.000 gallons 2 packs
see price
Robelle 3415 Image
4. Robelle 3415
15.000 gallons 1 bottle
see price
CLEARVIEW Winter ImageBest for Large Pools
5. CLEARVIEW Winter
35.000 gallons 2 packs
see price
In the Swim Closing Kit Image
6. In the Swim Closing Kit
15.000 gallons 2 packs
see price
Omni OMN24288 ImageBest for the Money
7. Omni OMN24288
20.000 gallons 2 packs
see price

1. POOLIFE Kit


POOLIFE Kit
View Price on Amazon

Specifications:

  • Water volume : 20.000 gallons
  • Shock treatment : 2 packs
  • Stain protection :

  • Winterizer :
  • Chlorine-based : Zinc and calcium hypochlorite
  • Additional products included : 2 algaecide boxes




POOLIFE Kit ensures you have all the required support to winterize your pool safely, ensuring no bacteria will form through winter and till you reopen it again. With a struggle-less application, as well as detailed instructions on how to use it correctly, it won’t take too long to let the chemicals work thorough the water system. It can be utilized with any type of pool – fresh water, chlorine, or saltwater, as the kit contents can maintain clean a water volume up to 20.000 gallons.

The kit contains two algistat packs, two turbo shock treatment cases, and one metal removing agent. The algistats have, as their main active ingredient zinc sulfate monohydrate, including a concentration of 35.5% elemental zinc. Each measures 6.oz, supplying more than enough substance to prevent alga from appearing in the water.

The shock-therapy packs contain 78% calcium hypochlorite, with an available chlorine level of 75%. It has a quick dispersing rate, which leaves the water crystal-clear, indifferent to the texture the inner lining has. The metal removing agent will take care of anything metal-related. With its help, there will be no metal stains on walls or floor, and it will also contribute to clean pipes and deposit-free surfaces.

PROS

  • Prevents pathogens from forming underwater
  • Maintains the clarity
  • Prevents metal staining
  • Maintains metal-parts in top shape

CONS

Verdict

Its swift application offers hassle-free utilization, as well as the ability to quickly reapply it throughout the closed-season. It ensures the water remains without kelp, goo, or slime, regardless of the texture the inner lining offers. Capable of covering a volume of 22.000 gallons, it works with plenty of basin kinds.



2. BioGuard Arctic Blue


BioGuard Arctic Blue
View Price on Amazon

Specifications:

  • Water volume : 12.000 gallons
  • Shock treatment : 1 pack
  • Stain protection :

  • Winterizer :
  • Chlorine-based :
  • Additional products included :




This kit is capable of handling small-scale to medium-sized pools, with a volume up to 12.000 gallons. It sports a quick and hassle-free utilization method, it included detailed instructions guiding users step-by-step through the process. The formula ensures the water will remain sparkly clean through the entirety of the offseason, with no much or kelp coating the walls.

It includes two main units: a shock-treatment pack and an algae-protector. The shock-therapy is made from dichlor in a concentration of 58.2%, ensuring it destroys any pathogen particle present in the water at the moment you administer it through your pool’s system. It has a slow dispersion rate which ensures the effect is long-lasting. To supplement and further enhance its potency, the protection against fungus includes, as one of its main active ingredients, metallic cooper, in a proportion of 3.3%. This high copper concentration sterilizes the water, preventing the apparition of new bacteria, pathogens, fungi, or kelp.

PROS

  • Destroys any fungi particle present in water
  • Prevents new kelp from appearing
  • Preserves the clarity of the water
  • Long lasting effects

CONS

Verdict

Due to its high concentration of dichlor, no pathogens and microorganisms can survive through the offseason in your pool. Even more, owing to the added metallic cooper, the overall effect is enhanced, the water remaining completely sterilized with the effect prolonging for high-end results. Even more, its quick and swift application, ensures it is compatible with plenty of small-scale or middle-sized basins, as it can keep up to 12.000 gallons clean.


3. In The Swim Kit Deluxe Bundle


In The Swim Kit Deluxe Bundle
View Price on Amazon

Specifications:

  • Water volume : 15.000
  • Shock treatment : 2 packs
  • Stain protection :

  • Winterizer :
  • Chlorine-based :
  • Additional products included : 1 x sorb, 1 x floater, 1x vinyl air pillow




In The Swim Kit Deluxe Bundle includes all the elements you’ll require for a complete and safe close. Since the formula used in this kit won’t affect the inner lining material of the pool, it can be used with all types and kinds of basins, regardless of their placement, as long as they don’t exceed a volume of 15.000 gallons. The kit includes one winterizing solution, stain-away prevention, 2 lbs of chlorine for intense shock treatment, a winter sorb and floater as well as one large air pillow.

The stain-away protection guarantees it will eliminate any type of metal stains that might occur in the pool, as well as prevent them from appearing. It will also eliminate deposits before they can form. The shock chlorine kills any alga-remains as well as prevents the apparition of new fungus, pathogens, or bacteria. Its effect is long-lasting and enhanced by the winterizer, as it not only prolongs the overall antiseptic effect but also maintains the water’s clarity.

The floater acts as a dispenser which will spread non-chlor chemicals around the water surface, eliminating CO2, thus, halting the alga’s food source. It can be adapted to your pool’s capacity as it comes with an adjustable design. The sorb will increase its weight up to 40 times if it’s necessary, as it absorbs any type of residual oils left in the pool, preventing them from sticking to the pool’s system. In turn, the large 4’ by 8’ durable vinyl pillow filled with air will keep the cover above the water level, preventing its freezing during cold temperatures.

PROS

  • Compatible with all kinds and types of pools
  • Has no harmful effect on the inner linings
  • Ensures the clarity of the water
  • Prevents the apparition of algae and fungi
  • Prevents and removes deposits
  • Maintains the pool’s system – pump, filter, and skimmer – clean and stain free

CONS

Verdict

Although just a bit pricier than its counterparts, this kit is the perfect choice if you wish to fully winterize your pool in one go. It removes and prevents stains and deposits from appearing, as well as eliminating the prime food source of algae, thus diminishing the chances as well as combating the apparition of fungus, kelp, or other pathogens. It will remove the remaining oils from the water, as well as maintain the cover away from the waterline to prevent freezing.



4. Robelle 3415


Robelle 3415
View Price on Amazon

Specifications:

  • Water volume : 15.000 gallons
  • Shock treatment : 1 bottle
  • Stain protection :

  • Winterizer :
  • Chlorine-based :
  • Additional products included :




Robelle 3415 supplies all the necessary materials to keep your pool safe during wintertime and have an easy reopening in spring. The kit is compatible with several types of pools, as the substances won’t damage the inner lining. It can work with a volume that doesn’t go beyond 15.000 gallons. It includes a winterizer, 2 lbs of shock treatment as well as an anti-stain.

The winterizer ensures the water is clear and transparent, preserving its odorless attribute. The shock treatment enhances the cleaning effects, reducing algae, fungi, or goo as well as preventing their return through its long-lasting effects. The stain protection gives the finishing touches as it protects the pool as well as its system from metal spots and stains, ensuring no deposits can accumulate on walls and waterline.

PROS

  • Preserves the clarity and cleanness
  • Prevents the apparition of fungi, algae, or pathogens
  • Prevents deposits from forming
  • Compatible with several types of pools

CONS

  • Doesn’t contain anti-freezing properties
  • The instructions aren’t clear enough

Verdict

A tri-kit which provides you with everything you need to keep the basin’s water crystal clear throughout winter. Its substances will keep algae and fungi away, as well as preserve the lining spotless. It will also take care of stains and deposits, removing and preventing them from appearing.



5. CLEARVIEW Winter


CLEARVIEW Winter
View Price on Amazon

Specifications:

  • Water volume : 35.000 gallons
  • Shock treatment : 3 packs
  • Stain protection :

  • Winterizer :
  • Chlorine-based :
  • Additional products included :




CLEARVIEW Winter ensures no pool is left unattended when the cold weather begins. It can cover a large water volume, up to 35.000 gallons, ensuring safety for several pool sizes. Even more, in case you own a smaller-scale basin, it has two more variants, a 7.500-gallon one, and a 15.000-gallon type, for high versatility. The kit includes a shock treatment, a stain-protector as well as a poly algicide.

The shock treatment comes in the forms of three powder packs, which include, as one of their main ingredient, potassium monopersulfate in a proportion of 45% which ensures the water is oxidized with the equivalent of 3.26% active oxygen. This means that all organic contaminants will be removed, completely sterilizing the water. The stain protector plays a double role, as it won’t simply prevent them from appearing, but it will also remove already existing metal stains. Even more, it will take care of deposits that often are found along the waterline.

Although it contains no chlorine, the poly algicide is highly effective in combating hard-to-remove kelp and fungus, its effectiveness spanning over several pH levels. It doesn’t affect the chlorine in the pool, but instead, it fights alongside it to remove and prevent the apparition of pathogens. Even more, it won’t foam, maintaining a clear state of water.

PROS

  • Compatible with several kinds of basins
  • Hassle-free utilization
  • Prevents and combats algae
  • Prevents and removes stains

CONS

Verdict

The kit ensures all basin sizes can be prepared successfully for winter. Its ingredients will maintain the water clear, as well as sanitizing it in the process through the oxygen employed. Even more, it will prevent stains from discoloring the inner lining and changing its color, as the stain protector guarantees there will be no metal sports or deposits. Even more, it prevents pathogens from forming completely sterilizing the water.



6. In the Swim Closing Kit


In the Swim Closing Kit
View Price on Amazon

Specifications:

  • Water volume : 15.000 gallons
  • Shock treatment : 2 packs
  • Stain protection :

  • Winterizer :
  • Chlorine-based :
  • Additional products included : 1 x floater, 1 x sorb




In the Swim Closing Kit ensures all pools that have a capacity which doesn’t go beyond 15.000 gallons can benefit from a complete winterizing procedure. It includes all the required elements for your pool to be as good as new in spring, for a hassle-free reopening. Thus, it contains a stain-protection, algaecide, shock treatment, a floater as well as a sorb.

The stain protection ensures there will be no metal spots or mineral deposits on your pool and in its waters, whereas the winterizer prevents the apparition of fungi. It will preserve the water’s clarity while taking care of any remaining alga particles. The shocking therapy is based on a non-chlor formula, employing the power of oxygen to maintain the water pristine. It is highly compatible with other water-care products, so it won’t reduce their effectiveness.

The floater ensures there will be no track of CO2 in the water, eliminating the algae ‘food’, thus stopping and preventing their apparition and growth. Moreover, it sports an adjustable design which enables each user to set up according to their pool kind. The sorb is crafted from non-toxic foam which will expand is weight, removing any types of residual oils or substances that, otherwise, might block and deteriorate the pool’s system.

PROS

  • Prevents and removes goo, slime and kelp
  • Prevents the apparition of stains
  • Removes oily residues and substances
  • Preserves the water clarity

CONS

Verdict

The kit will provide all the necessary substances as well as detailed information on how to use them, for the successful preservation of your pool through the winter period. It will not only remove algae and fungi, but it will also prevent their re-apparition, sterilizing the water entirely. Even more, there will be no metals stains or mineral deposits on the pool’s walls. There won’t be any slime of goo to block the pump and pipes, either.



7. Omni OMN24288


Omni OMN24288
View Price on Amazon

Specifications:

  • Water volume : 20.000 gallons
  • Shock treatment : 2 pack
  • Stain protection :

  • Winterizer :
  • Chlorine-based :
  • Additional products included :




Omni OMN24288 is a great aid in the fight against alga and fungi during winter months. The kit can cover a water volume as large as 20.000 gallons, making it an ideal choice for small-scale and medium-sized pools. The kit includes an algicide, and two powder-packs od shock treatment, ensuring a swift and hassle-free utilization.

The shock powder has as its main active ingredient dichlor, in a proportion of 99%, providing a high chlorine concentration to remove, kill and prevent any bacteria, pathogen or microorganism from inhabiting the water. It has a slow-burn action, ensuring a long-lasting effect with high-end results. The algicide enhances this effect, thanks to substances blend which will sanitize the water, preserving its clarity and cleanness.

PROS

CONS

  • Doesn’t include an anti-freezer
  • Can’t prevent staining

Verdict

The kit includes the basic elements you’ll need to winterize your pool successfully. The algaecide will ensure there is no way for any fungus to survive the winter, while the shock treatment will prevent them from reappearing. Even more, it will preserve the water’s clarity. However, it can’t eliminate or prevent metal stains and mineral deposits.



How to Prepare the Pool for Winter

To benefit from a long-lasting home-swimming basin, its maintenance should continue even off-season, during winter months. According to the style of the pool you own, there are different steps you should keep in mind when sealing them up for cold temperatures. So, without further ado, let’s take a closer look at them:

Step 1 Measure your basin and chose its cover. If you’ve previously acquired a cover, you can use that one instead of buying a new one. Provided that the area where your pool is located is prone to heavy leafing, then you should consider acquiring a leaf net too, since it will make the cleaning procedure easier.

Step 2 Cleanse the pool completely. Make sure there is no debris on the floor, walls, in the filter, the skimmer, or the pump. Also, make the water chemical level neutral, with a stable pH.

Step 3 – Use a winterizing kit, and, following the instructions provided, set the substances in the pool. They do require a certain order, in which they should be allowed to enter the water, to not disturb the other chemicals, so be careful when using them. Pick a kit that ensures all aspects of your basin are taken care of, meaning that it includes all the necessary items to safeguard and prevent not only bacteria or pathogens, but also metal stains and deposits, as well as residues in case any remained.

Step 4 – Besides the special attention given to the quality of the water, there are also other areas which will need preservation. The supply lines, along with the filter and skimmer, should be included in the winter-care. Drain all the water, and plug the pipes, preventing it from reentering the filter. If, however, the water does manage to sneak back in, you can add some anti-freeze to ensure it won’t damage the gear.

Optional Step – For above-the-ground pools, a pool pillow can aid in better preservation. Once placed inside the basin, it will impede the water and the cover from touching, ensuring the cover’s security in case the water does freeze.

Step 5 – Once the preparations are done, it’s time to seal it up. If your pool is large, ask for a helping hand. The less amount of water goes on top of the cover, the better. Once the cover is completely set, you can add the leaf net (optional).

To maintain the cover water-free, as rain and snow will deteriorate it if they accumulate, consider investing in a cover pump. It will help you dispose of the water excess in no time.

All in all, if you make the necessary preparations for your pool ahead of time, for winter months, not only will you prolong its overall lifespan, but will also have an easier spring reopening. Regardless of the basin style you own, the steps are similar and easy to remember, guaranteeing you won’t have a hard time following them.


Final Thoughts

Winter months can be quite harsh on your swimming pool if you haven’t sealed it correctly. The winterizing pool kit will ensure you have all the required elements to keep the pool water clean and clear. Surely you’ve already picked your favorite by now, but if you’re still undecided, let’s quickly review them:

Best Overall : POOLIFE Kit
POOLIFE Kit offers a swift solution to clean and clear pool water even throughout the cold season. With a powerful formula to keep alga at bay, the water clarity will be maintained till the pool’s reopening. Even more, it includes substances which also prevent metal staining, keeping the metallic elements of the swimming pool in top shape.

Editor’s Choice : In The Swim Kit Deluxe Bundle
In The Swim Kit Deluxe Bundle supplies you with everything you might need to successfully seal the pool through cold months. Regardless of its placement above the ground or in the ground, this kit can cover up to 15.000 gallons. Even more, it protects against metal stains, as well as prevents the apparition of fungi and algae, or other underwater pathogens.

Best for Small Pools : BioGuard Arctic Blue
If your pool is small-scaled, or medium-sized, BioGuard Arctic Blue can help keep the water clean throughout the offseason. Its long-lasting, slow-burn effect ensures there will be no more algae in the water, as it not only destroys them but also prevents their re-apparition. Even more, it preserves the clarity of the water, preventing it from clouding.

Best for Large Pools : CLEARVIEW Winter
Able to cover and protect a water volume that doesn’t go beyond 35.000 gallons, CLEARVIEW Winter is ideal for medium or large-sized pools, regardless of their style or kind. It will not only remove and keep away slime, goo, and kelp but will also ensure no metal stains are damaging the inner lining. It has a long-lasting effect, which ensures it will cover the entire offseason.

Best for the Money : Omni OMN24288
If you’re on a tight budget yet you don’t want to compromise quality, Omni OMN24288 is a choice you should consider. With an asking price for all pockets, it protects the quality and clarity of the pool water. Its protection spans on a long period, ensuring there will be no bacteria, kelp, or pathogens forming during the cold season.

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