Name: Member's Mark Algaecide 40
Brand: Member's Mark
SKU: 15332300532
Availability: OutOfStock
Rating: 4.5 (330 reviews)

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Member's Mark Algaecide 40

Instructions

<summary><ul><li><strong>Potent Algae Solution</strong>: This powerful solution controls the growth of algae and algae slime in swimming pools, provided as a convenient set of two for extended supply.</li><li><strong>Broad Algae Spectrum</strong>: Effectively treats various algae types, particularly potent against green algae (Chlorella pyrenoidosa) and Phormidium, with enhanced efficacy in warmer water.</li><li><strong>Versatile Application Areas</strong>: Ideal for maintaining hygiene in swimming pools, spas, whirlpools, and hot tub baths.</li><li><strong>Precise Dosage Instructions</strong>: Initial dosage requires 3.2 oz per 5000 gallons, with a subsequent maintenance dosage of 0.8 oz per 5000 gallons.</li><li><strong>Regular Maintenance Interval</strong>: The maintenance dose should be added consistently at intervals of 3-5 days for continued effectiveness.</li><li><strong>Important Safety Warning</strong>: Product is corrosive, causes irreversible eye damage and skin burns, is harmful if inhaled, and must be kept out of reach of children.</li></ul></summary>

<h3>Effective Algae Control</h3> <p>Member's Mark Algaecide 40 is a powerful solution designed to control the growth of algae and algae slime in swimming pools. This product comes in a convenient set of two, ensuring you have enough supply to keep your pool clean and clear for a longer period.</p> <h3>Wide Spectrum of Algae Treatment</h3> <p>This algaecide is effective against a variety of algae types. It is particularly potent in controlling the growth of Chlorella pyrenoidosa, commonly known as green algae, and Phormidium, both of which can cause significant problems in swimming pools. The effectiveness of this product increases as pool water temperatures rise, making it an ideal choice for maintaining pool hygiene during the warmer months.</p>

Brand

Product Net Content UOM

<ul>  <li>Member's Mark™ Algaecide 40</li>  <li>Perfect for swimming pools, spas, whirlpools, and hot tub baths</li>  <li>Initial dosage: 3.2 oz per 5000 gallons, Maintenance dosage: 0.8 oz per 5000 gallons</li>  <li>Maintenance dose to be added at intervals of 3-5 days</li>  <li>Warning: Corrosive, causes irreversible eye damage and skin burns, harmful if inhaled, keep out of reach of children</li> </ul>

Specifications

title_store_not_available

<ul>
<li>Member's Mark™ Algaecide 40</li>
<li>Perfect for swimming pools, spas, whirlpools, and hot tub baths</li>
<li>Initial dosage: 3.2 oz per 5000 gallons, Maintenance dosage: 0.8 oz per 5000 gallons</li>
<li>Maintenance dose to be added at intervals of 3-5 days</li>
<li>Warning: Corrosive, causes irreversible eye damage and skin burns, harmful if inhaled, keep out of reach of children</li>
</ul>

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.

Well Worth the Money

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.

Substitute for wet and forget

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.

Great algaecide

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.

Best product

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.

Algae free pool all AZ summer

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.

Foam but got rid of algae

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.

Algacide in 24 round pool

Horrible product. I put in the recommended amount and my pool turned into a sea of foam. Still after 2 weeks I had so much foam, I had to invest in de-foaming products just to get rid of some of the foam. If I wasn't in rain parched California, I would have drained my pool, but with the drought, that wasn't an option. I will give it 2 stars, because it did seem to get rid of most of the algae.

Sea of foam

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.

Foam is a definite possibility

THIS PRODUCT CREATES A NIGHTMARE!  SEE PICTURES!  I don't typically write reviews but if I can save someone the headache. The foam and smell will not go away. It has been almost a week. We have removed all foam by buckets for days and it still comes back!

Member's Mark Algaecide 40

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