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Customer reviews for Member's Mark Quick Dissolving Shock 20lb with 10 Test Strips for
Member's Mark Quick Dissolving Shock 20lb with 10 Test Strips
4.6 out of 5 stars
stars1,448 ratings427 reviews
  1. 5 stars81% (1,171)
  2. 4 stars9% (129)
  3. 3 stars3% (49)
  4. 2 stars2% (28)
  5. 1 star5% (71)

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Showing 421-427 of 427 reviews
Mar 24, 2022
what happened
4 out of 5 stars review

too bad the pricing has doubled

Used to be a great value , but not so much anymore

Helpful?36ZU7WJS44RT15040303929
Dec 14, 2015
Boomer8
4 out of 5 stars review

Works

This stuff works for me, although I usually have to wait 2 or 3 days to get results (i.e., blue water).

Helpful?36ZU7WJS44RT15040303929
Aug 31, 2015
PoolatMyHouse
4 out of 5 stars review

Works fine

Nonsense. I never write reviews but saw all the one star reviews. If you follow directions, this product works fine and is a really good price.

Helpful?36ZU7WJS44RT15040303929
Sep 27, 2015
tchapin
5 out of 5 stars review

Great Deal

Purchased MM Shock and my pool became clear and clear of algae within a couple days. MM Shock is a great deal!

Helpful?36ZU7WJS44RT15040303929
May 17, 2025
Pool owner
2 out of 5 stars review

Stabilizer included

Beware this has stabilizer in it and not just chlorine. Need to know your chemicals putting into your pool.

Helpful?36ZU7WJS44RT15040303929
Nov 6, 2015
steve001
5 out of 5 stars review

great way to get things done came right store and ready for pickup

Helpful?36ZU7WJS44RT15040303929
Jul 27, 2022
SRW
1 out of 5 stars review

Price

Bought this last year probably around 50.00 or 60.00 bucks this year 129.00 wow

Helpful?36ZU7WJS44RT15040303929