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Black Unit Algaecide & Mineral Purifier 4-Pack | PoolRx 331067
Black Unit Algaecide & Mineral Purifier 4-Pack | PoolRx 331067
Black Unit Algaecide & Mineral Purifier 4-Pack | PoolRx 331067
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Black Unit Algaecide & Mineral Purifier 4-Pack | PoolRx 331067

Marsoni M251S
Sale price$130.00
Pay 4 payments of $32.50 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Black Unit Algaecide & Mineral Purifier 4-Pack | PoolRx 331067Protect your pool against algae and cloudiness with the PoolRx Black Unit 331067 (4 Pack), a mineral powered purification system that delivers pristine, healthy water while dramatically lowering chlorine consumption. The specialized mineral blend steadily dissolves into the water, amplifying chlorine's ability to neutralize bacteria and prevent algae from taking hold. Packaged as a 4 pack, this set is ideal for treating larger pools or servicing
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  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 752 reviews
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Product Reviews
J
Verified Purchase
Jessica Burdett
Lowell, US
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
J
Verified Purchase
john jeffrey elliott
Houston, US
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
Mar Gee
Omaha, US
★★★★★ 5
Style and comfort
Size: Medium, Color: Black
Exactly what I was looking for. Style and sock thickness and comfort.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
A
Verified Purchase
Amazon Customer
Port Orchard, US
★★★★★ 5
Comfortable
Size: Medium, Color: Blue
So comfortable! They stay up perfectly love love love
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 7, 2025
N
Verified Purchase
no body!
Phoenix, US
★★★★★ 5
Perfect fit
Size: Large, Color: (100) White / White / Black
Durable and comfortable. Size works well. Very soft with nice thickness for training. Fairly long lasting
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026

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