Search  for anything...

AquaDoc Winter Pool Shock Oxidizer - Non Chlorine Shock for Closing & Winterizing - Chlorine-Free Pool Closing Treatment for Above Ground & Inground Pools - 1 lb

Based on 37 reviews
Condition: New
Checking for the best price...
$9.99

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE refund/replacement until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Nov 1 – Nov 2
Order within 12 hours and 39 minutes

Available payment plans shown during checkout

Protect Your Purchase

Easy claims online, fast replacements, no fees

Checking for protection plans...

At a glance

Condition
New
Model
POOL-WO-1LB
Dimensions
10 x 10 x 10 in
Weight
1 lb
Item Form
Granular

Features 5

  • Non chlorine pool shock - AquaDoc's powerful oxidizing shock is formulated for pool closing and winterizing. It helps breaks down oils, sweat, and debris to support water clarity and balance through the off-season without relying on chlorine.
  • Oxidizes and reduces chloramine odors - This chlorine free shock for pools helps reduce buildup that contributes to cloudy water and unpleasant odors. Use this granular pool shock to improve water quality during pool closing and winter maintenance.
  • Supports easier spring opening - This non chlorine shock is designed as an alternative to heavy chlorine treatments. It helps support water clarity through winter so opening your pool is faster, cleaner, and requires fewer chemicals.
  • Gentle on pool surfaces - Designed for vinyl liners and pool finishes, this chlorine free oxidizing shock wont bleach or damage surfaces. It works effectively in both above ground and inground swimming pools.

Specs 10

Brand MAV AquaDoc
Item Weight 1 Pounds
Item Form Granular
Product Benefits Kills Bacteria, Prevents Stains, Controls Algae, For low-odor sanitization
UPC 850067346722
Number of Items 1
Unit Count 16.0 Ounce
Product Dimensions 10 x 10 x 10 inches

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 1 – Nov 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Works great so far
Bought this to help close my pool for the winter. I was late closing and had some algae in the bottom already but it turned white a day or so after putting this in. Easy to use and open. Best value I saw at time of purchase. Seems to work good sonfar.
Reviewed in the United States on October 26, 2025 by RedNeckJiuJitsu

Pool Winterization
Worked as it should
Reviewed in the United States on November 7, 2025 by James Felix

Great for pool closing
Since we have already closed down the pool for this year, this bag of non-chlorine shock will not be needed until next September. It came well packaged, and I can assume that it will work just as well as other brands of oxidizer that I have used in the past.
Reviewed in the United States on September 22, 2025 by Kaycee

Great product!!!!
Our pool is always clear and beautiful. Aquadock Winter shock makes it easy to open in the spring. We are always shocked how clear the water is when removing the cover to open for the season.
Reviewed in the United States on October 7, 2025 by linda kay linda kay

Amazing pool closing product
I have used this product to close our inground pool for the last 4 winters. The pool is always clear when opening in the spring! If you want clear water when opening your pool, then use this product!
Reviewed in the United States on September 28, 2025 by Amazon Customer

Recommended to us by a family member; we will see
We picked this up on the recommendation of a family member to use with Lo-Chlor to close our pool this winter. Our pool was growing algae when we added it and we waited 3 days. The algae seemed to be disappearing from our 15' round, 5' deep pool, but it wasn't completely gone. I am not sure if this completely works or not. I hope it does, but we closed the pool after a couple more days. We will know for sure when we open it next May. Fingers crossed all is OK. The price is not too bad , so I would be willing to buy more than one if needed for my pool. ... show more
Reviewed in the United States on November 11, 2025 by Luv2Read

Good value
This is a pretty good price for non-chlorine shock, whether or not you are using it to winterize your pool. Since I have a large saltwater pool, I tend to avoid conventional shock treatment bags from the hardware store because I am trying to keep my calcium and cyanuric acid levels under control and my chlorine levels are usually 3 ppm or above anyway. This is a great solution for breaking down contaminants if you've had a lot of swimmers recently. I also have poured this type of non-chlorine shock directly onto black algae patches to kill them successfully. One bag is good for 12,000 gallons, so you might need a couple or more if you have a large pool. ... show more
Reviewed in the United States on November 5, 2025 by AW AW

Worth a try to battle with our problem with resistant algae.
We have not closed the pool yet and are waiting for a new cover. We have a hge tree and lots of leaves drop in the pool. Algae is a huge problem. This "Shock" looked like a good idea. We won't know until the Spring. It seemed like a good price and was well packaged.
Reviewed in the United States on November 10, 2025 by Deborah E.
Checking for best price...