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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 1-10 of 110 reviews
Sep 3, 2020
jvena
5 out of 5 stars review

Verified Purchase

Well Worth the Money

We've been using this Algaecide for the last 3 years with excellent results. 1 gallon treats our 20'x40'' pool on a heavily wooded lot, where we battle with leaves daily. The case contains 2 gallons which is all we need each season, for opening and through the entire summer.

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Apr 15, 2021
Ken
5 out of 5 stars review

Verified Purchase

Substitute for wet and forget

Great product at a great price! Members Mark Algaecide 40 has the same chemicals in it as Wet and Forget but at a 40% concentration instead of Wet and Forget’s 10%. I have used it on1/2 mile of white poly horse fence for the past three years and it works great at about 10% of the cost of wet and forget. I mix it 6 oz/ gallon of water and add 1 oz/ gallon of fabuloso as a wetting agent.

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May 25, 2021
Sheila T
5 out of 5 stars review

Verified Purchase

Great algaecide

Purchased this last summer and never had an issue so I decided to purchase it again this year. Very pleased with no issues in our pool the entire season.

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Sep 4, 2024
Shannon U
5 out of 5 stars review

Verified Purchase

Best product

This product is the best deal for your money. It is very concentrated and works great. Another name brand product at the same price point needs one gallon for an initial dose (for my size pool!) I only need 16 oz of the Member's Mark product to start and 4 oz a week if I need it for a booster. At first glance, one would think it is expensive, but after you realize you only need 1/8 the product, it is well worth it! It wirks great and keeps my pool free of algea growth.

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Jun 23, 2024
Joe
5 out of 5 stars review

Verified Purchase

Algae free pool all AZ summer

This is the only algacide that keeps my pool algae free in the long, hot Arizona summer. The dosage amounts are very small compared to box store and pool store algaecides. The two gallons last me a year with just a small weekly dose we have crystal clear water.

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Jun 11, 2021
TN Mimi
5 out of 5 stars review

Verified Purchase

right stuff

Arrived promptly and received what we ordered. Use this every year in swimming pool.

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May 27, 2021
Jeff
5 out of 5 stars review

Verified Purchase

Couldn't ask for better!

Have been using this algaecide for 4 years...works great!

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Dec 2, 2020
Suga
5 out of 5 stars review

Verified Purchase

AWESOME PRODUCT!!

I love the way this product keep my pool clean and free of algae.

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Sep 30, 2021
Keith B
4 out of 5 stars review

Verified Purchase

Algacide in 24 round pool

Works pretty good, as good as anything I have purchased for preventing algae, and you get a lot of product for the price. In my experience you need to add it more than weekly, I use the weekly dose about 3x a week. If your pool gets green its not real good at killing the bloom, but of you shock it good to get rid of the bloom, it will help keep it under control.

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Oct 4, 2024
Husker
4 out of 5 stars review

Verified Purchase

Foam but got rid of algae

It got rid of the green and blue algae which is really all I wanted. I am surprised that I’m still getting a lot of foam when the fountain is running. I believe I diluted it to their specs.

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