In The Swim Alkalinity Increaser for swimming pools, balances pH levels, 50 lbs sodium bicarbonate
In The Swim Alkalinity Increaser For Swimming Pools - Raises Alkalinity and Balances pH Levels in your Swimming Pool Water - 100% Sodium Bicarbonate - 50 Pounds Y7340
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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 - 50 Pounds Y7340

In The Swim Alkalinity Increaser For Swimming Pools - Raises Alkalinity and Balances pH Levels in your Swimming Pool Water - 100% Sodium Bicarbonate - 50 Pounds Y7340Swim Alkalinity Increaser Swimming Pools Raises Alkalinity Balances pH Levels Swimming Pool Water 100 Sodium Bicarbonate 50 Pounds Y7340Swim Alkalinity Increaser Swimming Pools Raises Alkalinity Balances pH Levels Swimming Pool Water 100 Sodium Bicarbonate 5 Pounds F085B05030AESwim Alkalinity Increaser Swimming Pools Raises Alkalinity Balances pH Levels Swimming Pool Water 100 Sodium Bicarbonate 25 Pounds Y7320
Size50 lbs

Key item features

  • Maintains pH Balance: In Swim Alkalinity Increaser helps maintain pH and chlorine levels in your swimming pool.
  • Prevents pH Swings: Prevents pH swings, ensuring stable water chemistry and safe swimming conditions.
  • Comfortable Swimming: High pH can cause skin rashes, while low pH can sting eyes; this product helps avoid both issues.
  • Refreshing Water: Ensures refreshing pool water, even during hot summer days.
  • Proper Alkalinity: Maintain alkalinity at 90-120 ppm by adding 1.5 lbs per 10,000 gallons to increase by 10 ppm.
  • Safe Substance: Made from 100% sodium bicarbonate, a safe and effective substance for pool maintenance.
  • Prevents Scaling: Helps prevent scaling on pool surfaces and equipment by stabilizing pH levels.
  • Easy Measurement: Carefully measure the increaser based on pool size to effectively manage alkalinity levels.
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Current price is $79.99
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Arrives by Fri, Jul 31
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Sold and shipped by In The SwimPro Seller
4.3865067466266865 stars out of 5, based on 3335 seller reviews(4.4)
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4.6 out of 5 stars
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97 ratings73 reviews
How item rating is calculated
  1. 5 stars77% (75)
  2. 4 stars11% (11)
  3. 3 stars5% (5)
  4. 2 stars1% (1)
  5. 1 star5% (5)
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Showing 1-3 of 73 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.

Review from https://intheswim.com
Helpful?5GAB7BC9FN9H676171429
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?5GAB7BC9FN9H676171429
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?5GAB7BC9FN9H676171429