In The Swim Alkalinity Increaser For Swimming Pools - Raises Alkalinity and Balances pH Levels in your Swimming Pool Water - 100% Sodium Bicarbonate - 5 Pounds F085B05030AE
In The Swim Alkalinity Increaser For Swimming Pools - Raises Alkalinity and Balances pH Levels in your Swimming Pool Water - 100% Sodium Bicarbonate - 5 Pounds F085B05030AE
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In The Swim Alkalinity Increaser For Swimming Pools - Raises Alkalinity and Balances pH Levels in your Swimming Pool Water - 100% Sodium Bicarbonate - 5 Pounds F085B05030AE

Key item features

  • pH Stability: In Swim Alkalinity Increaser maintains pH and chlorine levels, preventing pH swings and ensuring stable water chemistry.
  • Skin and Eye Safety: High pH causes skin rashes and low pH stings eyes; this product helps maintain a balanced pH for safe swimming.
  • Refreshing Water: Ensures refreshing pool water, even in hot summers, by maintaining proper alkalinity levels.
  • Dosage Instructions: Maintain alkalinity at 90-120 ppm. Add 1.5 lbs per 10,000 gallons to increase by 10 ppm.
  • Critical Balance: Use an alk increaser when pH drops below 7.4 or alkalinity drops below 80ppm to prevent unsafe water conditions.
  • Granular Form: Granular alk increaser stabilizes pool pH, preventing acidic and corrosive water conditions.
  • Safe Ingredient: Made from 100% sodium bicarbonate, a safe substance for pool water treatment.
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Current price is $21.99
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Arrives by Fri, Jun 26
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Sold and shipped by In The SwimPro Seller
4.376951905059338 stars out of 5, based on 3202 seller reviews(4.4)
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4.5 out of 5 stars
stars81 ratings60 reviews
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Showing 1-3 of 60 reviews

May 28, 2025
James S.
5 out of 5 stars review

Seller Verified Purchase

Customer Service

I purchased this item with 2 others. This item failed to ever show up. Called In the Swim they assisted with Fedex in tracking. . . . waited a few days to see if item would show up. Never showed, reached back out to In the Swim and no questions asked they resent the item and it showed up within 3 days. 10/10 experience and pricing. Definitely will buy from In the Swim again.

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Helpful?5GAB7BC9FN9H44441930
May 24, 2025
CharlieH
Item details
Size: 25 lbs
Sold and shipped byIn The Swim
5 out of 5 stars review

Verified Purchase

My pool was quite disgusting when I opened it for the summertime, I had the shock at several times just to turn the water to a normal color. The alkalinity increaser was very necessary after these treatments, and Walmart gave me a great price and a quick delivery for me to be able to swim before the weekend began.

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Helpful?5GAB7BC9FN9H44441930
Jun 18, 2026
Ivan
Top Reviewer
Item details
Size: 50 lbs
Sold and shipped byIn The Swim
5 out of 5 stars review

Verified Purchase

Got the job done. I have a large pool. This glorified baking soda is expensive but the best deal I found online. It did what needed to be done.

Helpful?5GAB7BC9FN9H44441930