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DuraChlor 25 Lb Water Hardness Increaser

Marsoni M251S
Sale price$70.30
Pay 4 payments of $17.57 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
DuraChlor 25 Lb Water Hardness IncreaserDuraChlor 25 Lb Water Hardness Increaser Raises calcium hardness to prevent long term damage to the pool and its equipment. Ideal range is 200 400 ppm Features & Benefits: Contains: Calcium carbonate Granular product Eliminates a cause of pool components failing prematurely
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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.
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4.3 ★★★★★
Based on 1370 reviews
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Verified Purchase
Joseph Pratt
Dallas, US
★★★★★ 5
Great product.
Size: Small, Color: (001) Black / Black / White
🙏🙏🙏
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
C
Verified Purchase
Chelsey Bartoli
Port Orchard, US
★★★★★ 5
Great buy!
Size: Medium, Color: (001) Black / Black / White
My husband loves these. The socks are warm and thick and extremely comfortable. They support the foot and he works outside all day and has had them for a little over a month. They stay in place and don’t move move around while he’s outside moving around.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 6, 2025
C
Verified Purchase
Cathy
Lexington, US
★★★★★ 5
Happy Customer
Size: Medium, Color: (001) Black / Black / White
Item was as describe, comfortable and stays in place thick but breathable ! I will order from this company again
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Reviewed in the United States on January 15, 2026
S
Verified Purchase
Sue M
Lake Worth, US
★★★★★ 5
Love these socks
Size: Large, Color: (035) Steel / White / Black
Great quality socks
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Reviewed in the United States on April 26, 2026
K
Verified Purchase
Kendra
Port Orchard, US
★★★★★ 4
Good quality
Size: Large, Color: (035) Steel / White / Black
These are a bit thicker then a compression sock and they come up higher on the ankle than a no-show sock normally does. They are very comfortable and soft.
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Reviewed in the United States on February 10, 2026

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