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Customer reviews for Member's Mark Algaecide 40 for
Member's Mark Algaecide 40
4.5 out of 5 stars
stars329 ratings110 reviews
  1. 5 stars77% (254)
  2. 4 stars10% (34)
  3. 3 stars3% (9)
  4. 2 stars2% (7)
  5. 1 star8% (25)

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Showing 61-70 of 110 reviews
Aug 29, 2021
Dan
4 out of 5 stars review

Verified Purchase

Works well

Helpful in eliminating green algae.

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Jun 29, 2019
Bryan
1 out of 5 stars review

Verified Purchase

Do not buy!

If you want a very sudsy pool, then this is for you. Takes several days for the suds to go away.

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Jun 17, 2021
ralph
5 out of 5 stars review

Verified Purchase

Good value

Good product

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May 26, 2021
Peggy
5 out of 5 stars review

Verified Purchase

Pool supplies

Good product

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Nov 3, 2021
Bill
1 out of 5 stars review

FOAMED IN POOL EVERYTIME I USED AND FOUNTAIN ON

This product may be a good preventive, definitely does not kill Algae. If you use a pool fountain for cooling, this Algaecide foams even with as little as 4 ounces dispersed at the return. A better product that kills and as a preventive that does not foam is Omni Algae Terminator and using Chlorine Tabs in a floater. Been using this past season when all else failed.

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Jun 7, 2019
DMob
2 out of 5 stars review

Foam is a definite possibility

If you're pool never blows air out of the jets, such as you would get if there's a spa connected or solar panels you might not have an issue, but your pool pump does sometime pump some air you will get bubbles. In fact just swimming a lap in the pool will create a trail of bubbles on the water's surface. Additionally, it puts off a chemical smell that tastes nasty when swimming. This all with just 6 ouches added to a 15k gallon pool... Very unhappy. As much as I want to give it 1 star, I'm going with 2 because it might work for some people, and it seems to be effective on the algae. I guess it's back to the 60% stuff for me.

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Sep 14, 2023
WQ
5 out of 5 stars review

Verified Purchase

Algae Gone

Gets the job done!

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Aug 21, 2023
Karen
5 out of 5 stars review

Verified Purchase

Algaecide

Grest

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Mar 8, 2022
Johnson
5 out of 5 stars review

Verified Purchase

Its good

Really works!

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May 26, 2021
Samyz
5 out of 5 stars review

Verified Purchase

Poolu

Great shock and price

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