SeaKlear AquaPill - WinterPill 2 ¾

4.3 4.3 out of 5 stars | 5,062 ratings

Price: 11.97

Last update: 02-03-2025


About this item

Easy to use winterizing treatment
Clarifies pool water
Improves filter performance
Pre-measured-release delivery system
One 2-3/4" Winter Pill treats up to 15,000 gallons of pool water

Product information


Top reviews from the United States

  • Kimberly C.
    5.0 out of 5 stars Great
    Reviewed in the United States on January 19, 2025
    I use these every year in place of the pricey start up or close kits.
    Much easier to use and works.
  • Paula K.
    5.0 out of 5 stars Winter Pill
    Reviewed in the United States on December 26, 2024
    I buy this winter pill every year along with a closing kit when I am ready to close the pool for the winter. It floats around in the pool all winter long releasing the proper pool chemicals. My pool has been crystal clear when I take the cover off in the spring. I recommend this to make your spring opener an easy one.
  • PJay
    5.0 out of 5 stars Pool water was crystal clear
    Reviewed in the United States on September 25, 2024
    I used this last winter – putting it in the middle of September and opening the pool in the middle of June. The pool water was absolutely crystal clear and swimmable within hours! I literally had to do nothing but check chemical levels – I didn’t even have to vacuum the pool (but of course I we did vacuum it when it was closed.
    I do need to point out that we have a mid-size Intex pool that holds considerably less than the 15,000 gallons advertised this item is intended for. But it worked remarkably, and I have no doubt that when we open the pool next June it will again be crystal clear!
  • Cah13
    4.0 out of 5 stars Does the job
    Reviewed in the United States on December 18, 2024
    Does the job for our above ground small pool was easy to use and understand the value for the money I think a lot of things pool related or overpriced and this is no exception not sure about water clarity yet since we haven't reopened it at this point obviously
  • Rosalyn Alsobrook
    5.0 out of 5 stars As advertised
    Reviewed in the United States on January 9, 2025
    Winterized the pool, tossed one of these in for good measure, then covered the pool to keep leaves out. 5 months later, opened the pool to crystal clear water.
  • Sl
    3.0 out of 5 stars Don’t know
    Reviewed in the United States on December 23, 2024
    I don’t know if they work yet but they both arrived with the liquid spilled out and packaging was wet .
  • Melissa Holmes
    5.0 out of 5 stars Easy closing
    Reviewed in the United States on November 22, 2024
    This product was simple to use and highly recommend by other neighbors. I can’t wait till next years season of pool days and to see how this worked for this winter.
  • Amazon Customer
    5.0 out of 5 stars Easy close for pool
    Reviewed in the United States on September 21, 2024
    Closing pool for season I have used this before ,like the ease of use ,came as expected. Water has stayed clear in previous years no alge once and done for the season easy clean for open in spring cost is reasonable , quality is ok

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