One-time purchase:
$38.45 $0.30 per Fl Oz
FREE delivery Monday, May 13
Ships from: Amazon.com
Sold by: Amazon.com
FREE Returns
FREE delivery Monday, May 13. Order within 12 hrs 22 mins
In Stock
$$38.45 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$38.45
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from
Amazon.com
Ships from
Amazon.com
Sold by
Amazon.com
Sold by
Amazon.com
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Returns
Eligible for Return, Refund or Replacement within 30 days of receipt
This item can be returned in its original condition for a full refund or replacement within 30 days of receipt.
Read full return policy
Payment
Secure transaction
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Payment
Secure transaction
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Save up to 5% on auto-deliveries.

Unlock 5% savings

Save 5% when you receive 5 or more products in one auto-delivery to one address.

Choose how often it's delivered

From once every 2 weeks to once every 6 months

Skip or cancel any time

We'll send you a reminder before each delivery.
Learn more
FREE delivery Monday, May 13. Order within 12 hrs 22 mins
In Stock
Deliver every:
×

Added to cart

$$38.45 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
$$38.45
Subtotal
Initial payment breakdown
Shipping cost, delivery date, and order total (including tax) shown at checkout.
Ships from and sold by Amazon.com
Add an Accessory:
Robelle 1405M Chlorine Tabs Pool Sanitizer, 5-Pounds
$53.83
Added to Cart
Robelle 2550 Pool Metal Remover Pool Stain Remover, 1-Quart
$16.20
Added to Cart
Robelle 2604B Pool Stabilizer for Pools, 4-Pounds
$24.18
Added to Cart
Robelle 2255B Alkalinity Increaser for Swimming Pools, 5-Pounds
$14.59
Added to Cart

Robelle 2420-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack

4.3 4.3 out of 5 stars 162 ratings
$38.45 $0.30 per Fl Oz
FREE Returns
4-Pack
Clarifier
{"desktop_buybox_group_1":[{"displayPrice":"$38.45","priceAmount":38.45,"currencySymbol":"$","integerValue":"38","decimalSeparator":".","fractionalValue":"45","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"uVvU2uZH3FJhxvYRx%2BT9BqP7V1VvQWE%2FS9VO66OgJhfI82DyYn%2FJELrQE3OFDxeYj%2Fl%2F31A%2FjNpjYJAc3pOoP6EpbfW0dXShyMPGS8eLt59iQVl1zPCc6BtOCWdHNUFsXkbraRamspzVQp1mL228HA%3D%3D","locale":"en-US","buyingOptionType":"NEW","aapiBuyingOptionIndex":0}, {"displayPrice":"$38.45","priceAmount":38.45,"currencySymbol":"$","integerValue":"38","decimalSeparator":".","fractionalValue":"45","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":null,"locale":"en-US","buyingOptionType":"SNS","aapiBuyingOptionIndex":1}]}

Purchase options and add-ons

Brand Robelle
Item Weight 128 Ounces
Item Form Liquid
Product Benefits Helps Clear Cloudy Water

About this item

  • Add 1 ounce per 5,000 gallons of swimming pool water
  • Clears cloudy and murky water
  • Turns dull water a bright sparkling blue
  • Fast-acting and easy to use
  • Powerful clarifier, sequestrant, chelating agent, and flocculant

Customer ratings by feature

Easy to use
4.8 4.8
Style
4.2 4.2
Value for money
3.9 3.9
See all reviews
Hard Rock apparel
Outerwear, tees, and accessories. Discover the rock shop.

Frequently bought together

Robelle 2420-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack
$38.45 ($0.30/Fl Oz)
Get it as soon as Monday, May 13
In Stock
Ships from and sold by Amazon.com.
+
Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1)
$13.99 ($0.11/Fl Oz)
Get it as soon as Monday, May 13
In Stock
Ships from and sold by Amazon.com.
+
Clorox® Pool&Spa™ Swimming Pool Algaecide, Prevents and Treats Pool Algae, Non-Foaming, 1 Quart (Pack of 1)
$18.29 ($0.57/Fl Oz)
Get it as soon as Tuesday, May 14
In Stock
Ships from and sold by Amazon.com.
Total price:
To see our price, add these items to your cart.
Details
Added to Cart
Choose items to buy together.

From the brand

Previous page
  2. Balanced Pool Water Ensures Sanitizer Efficiency, Swimmer Comfort and clear and helthy pool water
  3. Robelle 2607B Stabilizer for Swimming Pools, 7 lb
    Robelle 2256B Total Alkalinity Increaser for Swimming Pools, 10 lb
    Robelle 2205B pH Increaser for Swimming Pools, 5 lb
    Robelle 2825 25 Pounds Pool Calcium Increaser, 25-Pounds (Bucket)

    Step 1: Balance

    Visit the Store

  4. Sanitize with Robelle Chlorine: Kills Bacteria, Inhibits algae growth, Purifies and Disinfects
  5. Robelle 1405M Chlorine Tabs Pool Sanitizer, 5-Pounds
    Robelle 1410M Chlorine Tabs Pool Sanitizer, 10-Pounds
    Robelle 1420M Chlorine Tabs Pool Sanitizer, 20-Pounds
    Robelle 1440M-K 5-in-1 3-Inch Multi-Purpose Swimming Pool Chlorine Tabs, 35-Pounds

    Step 2: Sanitize

    Visit the Store

  6. Rejuvenate your pool water once a week with Robelle Shock
  7. Robelle 1701-12 Oxidizing Shock and Swim Monopersulfate Non-Chlorine Pool Shock, 1-Pound, 12-Pack
    Robelle 1701-24 Non-Chlorine Swimming Pool Shock, 24-Pack
    Dry Tec 1-1901-12 Treatment Pool Shock, 12-Pack
    DryTec 1-1901-24 Calcium Hypochlorite Chlorine Shock Treatment for Swimming Pools, 1-Pound, 24-Pack

    Step 3: Shock

    Visit the Store

  8. Prevent growth and treat existing algae with Robelle Algaecide.
  9. Pool Mate 1-2150-02 50 Pool Algaecide, 2-Pack
    Pool Mate 1-2150-04 50 Pool Algaecide, 4-Pack
    Pool Mate 1-2190-02BX Black Pool Algaecide, 2-Pack
    Pool Mate 1-2190-04 Black Pool Algaecide, 4-Pack

    Step 4: Algae Control

    Visit the Store

  10. Further Maintenance: Clarifiers and Stain Removers
  11. Robelle 2420-02 Water Brightener and Clarifier for Swimming Pools, 1-Quart, 2-Pack
    Robelle 2420-04 Water Brightener and Clarifier for Swimming Pools, 1-Quart, 4-Pack
    Robelle 2550-02 Mineral Out Stain Remover for Swimming Pools, 1-Quart, 2-Pack
    Robelle 2550-04 Mineral Out Stain Remover for Swimming Pools, 1-Quart, 4-Pack

    Further Maintenance

    Visit the Store

Next page

Product information

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

Feedback

Robelle

Robelle 2420-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

Where did you see a lower price?
/
/
/
/
Please sign in to provide feedback.

Looking for specific info?

Product guides and documents

User Guide (PDF)

Product Description

This is a flocculant designed to coagulate and floc suspended solids from swimming pool water. The solids will be filtered out of the pool or collect on the bottom for removal by the vacuum. Add 1 oz. of Clear Pool Water Clarifier per 5,000 gallons of swimming pool water. Addition should be made once a week to the pool when the filter is running. If the pool water is cloudy due to airborne dust or to high hardness of the water, add 4 oz. of Clear Pool Water Clarifier per 5,000 gallons of water. Allow at least 3 hours for Clear Pool Water Clarifier to work, then vacuum the residue from the bottom of the pool and backwash the filter if necessary.

Compare with similar items

This Item
Robelle 2420-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack
Robelle 2420-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack
Recommendations
SpaChoice 2-2440-04 Flocculant for Pool, 1-Quart, 4-Pack
SpaChoice 2-2440-04 Flocculant for Pool, 1-Quart, 4-Pack
dummy
Robelle 2430-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack
Robelle 2430-04 Pool Clear Water Clarifier for Pools, 1-Quart, 4-Pack
dummy
SpaChoice 2-2420-02 Pool Clear Water Clarifier for Pools, 1-Quart, 2-Pack
SpaChoice 2-2420-02 Pool Clear Water Clarifier for Pools, 1-Quart, 2-Pack
dummy
HTH 67067 Swimming Pool Care Clarifier Advanced - Crystal Clear Water in 24 Hours
HTH 67067 Swimming Pool Care Clarifier Advanced - Crystal Clear Water in 24 Hours
dummy
HTH 67080 Swimming Pool Care Drop Ou Flocculant - Clears Cloudy Water Fast 32 Fl Oz (Pack of 1)
HTH 67080 Swimming Pool Care Drop Ou Flocculant - Clears Cloudy Water Fast 32 Fl Oz (Pack of 1)
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Details
Added to Cart
Price$38.45$42.77-10% $48.02
Typical: $53.35		$34.99$10.67$24.96
Delivery
Get it as soon as Monday, May 13
—
Get it as soon as Monday, May 13
Get it as soon as Monday, May 13
Get it as soon as Monday, May 13
Get it as soon as Tuesday, May 14
Customer Ratings
4.34.3 out of 5 stars162
4.54.5 out of 5 stars176
4.34.3 out of 5 stars344
4.44.4 out of 5 stars212
4.64.6 out of 5 stars1,120
4.54.5 out of 5 stars473
Easy to use
4.8
4.5
—
3.6
4.6
4.6
Value for money
3.9
4.0
—
3.0
4.4
4.1
Style
4.2
—
—
2.3
4.2
—
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Amazon.com
form
Liquid
Liquid
Liquid
Liquid
Liquid
Liquid
weight
128 ounces
128 ounces
128 ounces
64 ounces
—
—

Customer reviews

4.3 out of 5 stars
4.3 out of 5
162 global ratings

Customers say

Customers like the clarity and value of the pool spa water treatment. They mention that it makes the pool clear and is great value for money. That said, opinions are mixed on performance and quality.

AI-generated from the text of customer reviews

4 customers mention4 positive0 negative

Customers are satisfied with the clarity of the pool spa water treatment. They mention that it makes the pool clear and consistently clearer.

"It did clear the cloudy water, but you have to be patient because it takes a couple days" Read more

"Helps keep the pool crystal clear" Read more

"Makes the pool clear thanx indeed for a great product." Read more

"...this Clarifier for 5+ years now, save money on it, and have consistently clearer water...." Read more

4 customers mention4 positive0 negative

Customers appreciate the value of the pool spa water treatment. They say it works quickly and is a great value for their money.

"Good product and good price" Read more

"...for my above ground cloudy pool, it worked quickly and was a great value for my money" Read more

"Works as expected and a great value!" Read more

"I've bought this Clarifier for 5+ years now, save money on it, and have consistently clearer water...." Read more

8 customers mention4 positive4 negative

Customers are mixed about the quality of the pool spa water treatment. Some mention it's a great product and inexpensive, while others say the cap is not secure and spilled.

"Good product and good price" Read more

"...My only comment is there was 1/2 of a bottle of the product that spilled out when being delivered but it looks like I’m not allowed to tell anyone..." Read more

"Nice product" Read more

"First… the cap is not secure. Spilled. Sticky mess...." Read more

6 customers mention3 positive3 negative

Customers are mixed about the performance of the pool spa water treatment. Some mention it works as expected and is a great value, while others say it didn't work well and is the least effective.

"I got this for my above ground cloudy pool, it worked quickly and was a great value for my money" Read more

"...Is this the same stuff? Same company? It does not work as well.I don’t recall it being a “brightener.”..." Read more

"Works as expected and a great value!" Read more

"Did not work well. I've used many clarifiers, but this one is definitely the least effective. After a week my water still looked bad...." Read more

Best product to start pool along with Robelle Algecide
5 Stars
Best product to start pool along with Robelle Algecide
Along with Robelle algecide this product truly helps the chlorine last longer a keep your pool clear
Hide
Thank you for your feedback
Sorry, there was an error
Sorry we couldn't load the review

Top reviews from the United States

An M. Truong
5.0 out of 5 stars My order cancelled by seller
Reviewed in the United States on October 6, 2023
Size: 12-PackStyle: ClarifierVerified Purchase
Good product and good price
Helpful
 Report
Margaret Byrne
5.0 out of 5 stars My water looks beautiful
Reviewed in the United States on June 12, 2023
Size: 4-PackStyle: ClarifierVerified Purchase
My water looks beautiful. My only comment is there was 1/2 of a bottle of the product that spilled out when being delivered but it looks like I’m not allowed to tell anyone that since I got an email telling me I could not post that.
14 people found this helpful
Helpful
 Report
David Garvin
4.0 out of 5 stars Cleared the water
Reviewed in the United States on July 13, 2023
Size: 1-PackStyle: ClarifierVerified Purchase
It did clear the cloudy water, but you have to be patient because it takes a couple days
One person found this helpful
Helpful
 Report
Mickey
5.0 out of 5 stars Cleaned up my water quickly!
Reviewed in the United States on January 15, 2023
Size: 1-PackStyle: ClarifierVerified Purchase
I got this for my above ground cloudy pool, it worked quickly and was a great value for my money
2 people found this helpful
Helpful
 Report
o p gray
5.0 out of 5 stars It does the the job
Reviewed in the United States on May 19, 2023
Size: 4-PackStyle: ClarifierVerified Purchase
Nice product
One person found this helpful
Helpful
 Report
Fan In the Attic
3.0 out of 5 stars Be Careful Picking it Up from Package …and… Helps a Little in the Pool
Reviewed in the United States on June 14, 2023
Size: 1-PackStyle: ClarifierVerified Purchase
First… the cap is not secure. Spilled. Sticky mess. Haven't even gotten it out to the pool yet so, to be continued.. maybe more than 2 stars …

Ok. Added one more star. Still cloudy.

I have used Robelle clarifier for a few years. Is this the same stuff? Same company? It does not work as well.

I don’t recall it being a “brightener.” As of now, it is helping only a bit. Maybe.

Ordering shock.
Customer image
Fan In the Attic
3.0 out of 5 stars Be Careful Picking it Up from Package …and… Helps a Little in the Pool
Reviewed in the United States on June 14, 2023
First… the cap is not secure. Spilled. Sticky mess. Haven't even gotten it out to the pool yet so, to be continued.. maybe more than 2 stars …

Ok. Added one more star. Still cloudy.

I have used Robelle clarifier for a few years. Is this the same stuff? Same company? It does not work as well.

I don’t recall it being a “brightener.” As of now, it is helping only a bit. Maybe.

Ordering shock.
Images in this review
Customer image Customer image
Customer imageCustomer image
3 people found this helpful
Helpful
 Report
Robin
5.0 out of 5 stars It works!
Reviewed in the United States on September 1, 2022
Size: 1-PackStyle: ClarifierVerified Purchase
The pool was green and now it's clear. It only took about a day and a half
One person found this helpful
Helpful
 Report
Robert
2.0 out of 5 stars Loose lids
Reviewed in the United States on August 28, 2023
Size: 4-PackStyle: ClarifierVerified Purchase
Check the bottles cap came off one that I tried picking up and two others loose.
Helpful
 Report