Clorox® Pool&Spa™ Swimming Pool Alkalinity Increaser, Keeps pH Balanced, 5LB (Pack of 1)
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Extended holiday returns
FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement 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.
To initiate a return, please visit our Returns Center.
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Availability:
In Stock.
Arrives
Monday, Dec 8
Size: 1 Count (Pack of 1)
Features
- For Raising Total Alkalinity: The Alkalinity Increaser helps maintain balanced pH levels in your pool water. Proper alkalinity levels reduce the need for frequent maintenance, and our product's granulated formula is easy to apply and dissolves quickly.
- Improves Swimmer Comfort: This product plays a crucial role in enhancing swimmer comfort by preventing eye and skin irritation caused by unbalanced pH. It helps prevent dry, itchy skin and red, burning eyes, ensuring a more pleasant swimming experience.
- Protects Pool Equipment from Corrosion: By keeping your pool's pH level balanced, this product helps prevent equipment corrosion, allowing you to spend less time maintaining and more time enjoying your swimming pool.
- Perfect for All Pools: Clorox Pool&Spa Swimming Pool Chlorine Stabilizer is perfect for new pools, freshly refilled pools and pools that use liquid chlorine.
- Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations.
Description
Clorox Pool&Spa Swimming Pool Alkalinity Increaser, Keeps pH Balanced, 5LB (Pack of 1);12005CLX.
Brand: CLOROX Pool&Spa
Item Weight: 5 Pounds
Item Form: Granular
Product Benefits: Corrosion,Alkalinity Increaser,Skin Irritation
UPC:
Brand: CLOROX Pool&Spa
Item Weight: 5 Pounds
Item Form: Granular
Product Benefits: Corrosion,Alkalinity Increaser,Skin Irritation
UPC: 810821023085
Global Trade Identification Number: 85
Number of Items: 1
Unit Count: 80.0 Ounce
Product Dimensions: 4.4 x 9 x 10.5 inches
Item Weight: 5 pounds
Manufacturer: Clorox Pool&Spa
Item model number: 12005CLX
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Dec 8
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Similar Products
Top Amazon Reviews
Size: 1 Count (Pack of 1)
Great price (if you have free Prime shipping). Great product. Works better than baking soda (won't raise that pH as much), and just as well as the much more expensive alternatives you find for "alkalinity up" at the big chain pool stores. We've found all Clorox brand pool supplies, especially this and the Shock, to be functionally perfect at a much cheaper price than big chain pool store alternatives. Not always available at WalMart, we were happy to find it here on Amazon at about the same cost with quick delivery. Life is better and easier with Amazon Prime.
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Reviewed in the United States on October 5, 2025 by Rich
Size: 1 Count (Pack of 1)
Like pH up, this is a basic chemical, no fancy blends of various complicated compounds. So why spend more? These Clorox spa chemicals have been the most cost effective I’ve found. The hardness increaser, pH up and this alkalinity increaser have all been excellent values. They are nicely granulated, and flow without undue caking. For convenience I do refill my original plastic containers from out spa starter kit. But these Clorox products are nearly half the cost of the spa shop and the lowest cost I’ve found so far. Storing the remainder in the resealable bags has not been a problem with shelf life either. Our spa is small so we use small amounts, this stuff will ladt use for a few years.
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Reviewed in the United States on August 2, 2025 by ChemE_75
Size: 1 Count (Pack of 1)
Great Product, Great Seller.
Reviewed in the United States on October 6, 2025 by Amazon Customer
Size: 1 Count (Pack of 1)
This product works as advertised and raised the total alkalinity of my pool. Ordering from Amazon was very convenient but the package is labelled as 100% Sodium Hydrogen Carbonate (or common baking soda) which I found on sale at a much lower price in my local warehouse store.
Reviewed in the United States on July 19, 2024 by DenM
Size: 1 Count (Pack of 1)
This product worked well to bring down the alkalinity in our in ground pool. We added it to the deep end with the pump running. The product dissolved very easily with no residue accumulation. Very good value compared to the pool store or Home Depot. Highly recommend.
Reviewed in the United States on August 31, 2025 by Ron M Ron M
Size: 1 Count (Pack of 1)
Works exactly as it should! Great price!
Reviewed in the United States on October 1, 2025 by Horselover4969
Size: 1 Count (Pack of 1)
We've purchased this clorox spa treatment cleaner a few times and every time we use it we can tell the difference the spa water. The product smells clean and is very easy to use per instruction. My spa water color is clear and the product dissolve with in hours. Extremely easy to use and a time saver for sure.
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Reviewed in the United States on September 19, 2025 by EDWARD SAWYER
Size: 1 Count (Pack of 1)
My pool turned green over night. Used 10 pounds for the size of my pool. Within a few days and constant flushing out the sand filter. My pool is clear again!
Reviewed in the United States on August 26, 2025 by Amanda G.