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poolrx

PoolRX+ Pool Unit 20k-30k gallons (4-Pack)

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$244.99 Why this price?
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Returnable until Jan 31, 2026

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Mar 5
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Features

  • New formula with 3 active Ingredients
  • Eliminates all types of Pool Algae
  • Reduces chemical demand
  • Effective for up to 6 Months
  • Ideal for Chlorine, Salt, UV, or Ozone Pools
  • NSF/ANSI 50 Certified

Description

POOLRX 331067 BLACK UNIT PLUS 20K

Brand: poolrx


Item Weight: 5.2 Pounds


Item Form: Tablet


Product Benefits: Controls Algae


UPC:


Brand: poolrx


Item Weight: 5.2 Pounds


Item Form: Tablet


Product Benefits: Controls Algae


UPC: 700553310679


Number of Items: 1


Unit Count: 4.0 Count


Product Dimensions: 7 x 7 x 4.75 inches


Item Weight: 5.2 pounds


Manufacturer: Pool Rx


Item model number: 331067


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Mar 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Works like a charm for me (in hot weather of Florida)
Works like a charm for me (in hot weather of Florida) I use 1 in April and 1 un mid July to avoid algae blooming due to warm water. 2 years without any algae !
Reviewed in the United States on November 22, 2025 by Louis R.
    • This stuff really works
I went from brushing my pool walls every three or four days to NEVER brushing them. This stuff is amazing!
Reviewed in the United States on July 23, 2025 by chris
    • One and done!
This little thing packs a huge punch! We just drop it in and it helps greatly with keeping the chemicals in our pool balanced. It helps control the algae in the pool. It's well worth it's cost. You'd be spending much more on chemicals and wasting so much time!
Reviewed in the United States on October 12, 2025 by Amazon Customer
    • Pool never looked better!
Our pool never looked so good! We have our pool serviced weekly, we keep our chlorine and chemical levels in balance. Then after 2 weeks of heavy rain, our pool looked like a fishing pond. The algae was pretty bad. We shocked it and it slowly started to look better but not great. A friend told us about this product so we put it in our skimmer. Not kidding, 24 hours later our pool was crystal clear! Looked better than before the algae mess! ... show more
Reviewed in the United States on August 3, 2025 by Denise
    • Clean pool!
I love it. I add it to the pool basket when I open the pool and it clears the pool within the next 24 . Of course, I have to remove any leaves from the bottom, backwash the filter (san filter) first. Then I let the pool recirculation for about 6 hours ley mu pump to rest and then I let it filter. ( of course I add the appropriate amount of chlorine tablet on the skimmer) Im not a professional, second year I do this with Pool Rx and it works awesome. Before this I spend a lot of shock treatments and it was so frustrating. ... show more
Reviewed in the United States on August 14, 2025 by Laura Rodriguez
    • Worth it
All pool rx products are solid
Reviewed in the United States on November 14, 2025 by James O’Neal
    • pool help
this stuff cleans my pool so easily, keeps my pool guy too happy- he hardly has to do anything. Though you can tell when it stops working almost immediately. we change it every 4 months, 3 times a year.
Reviewed in the United States on November 11, 2025 by Amy Rachel Miller
    • love poolrx
Keeps my pool clean throughout the spring summer and fall. Purchasing it in a multipack makes it much more affordable. I do not put it in the skimmer or in the pool pump. I put in a floater and let it float in the pool. I still put the weekly chlorine but otherwise the pool is clear all summer long
Reviewed in the United States on July 14, 2025 by Juglone

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