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In The Swim pH Increaser is a granular, 100% pure sodium carbonate formula designed to raise and stabilize pool pH and alkalinity. Available in a hefty 50-pound bucket, it prevents acidic water conditions and pH swings, ensuring swimmer comfort and protecting pool equipment. Ideal for maintaining the optimal pH range of 7.2 to 7.6, this product delivers reliable, easy-to-use pool chemistry management for a refreshing swim every time.






























































| ASIN | B08LHCHYFN |
| Best Sellers Rank | #255,997 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #246 in Swimming Pool Balancers |
| Customer Reviews | 4.2 4.2 out of 5 stars (116) |
| Item model number | 119303 |
| Product Dimensions | 21.5 x 14.2 x 5.5 inches |
H**F
The best pH increaser at the best price!
Why did you pick this product vs others?: This pHup product is the generic 'soda ash' chemical at the very lowest price! I have used it for years.
T**R
Ph increaser
Used to raise the PH of our well water so as not to eat away at the pipes.
B**S
Mine came in one 50 pound paper bag at a reasonable price
When my PH increaser soda ash came, I was surprised to find one bag instead of two plastic, resealable bags as listed in the product description. Being elderly, I enlisted a friend to pour the bag into an empty bucket I had. This increaser is cheaper than the pool supply stores because it ships free on Amazon. It works great at raising my PH level. It is not clumpy and disolves quickly. It also appears pure soda ash.
Y**I
Great Pricing!
Very good pricing for 50lbs of soda ash! Item was received in 1 large 50lb bag different from item show on web site. I transfer the soda ash to plastic containers for storage.
J**E
unacceptable packaging
Product was in a paper bag with no plastic liner. The bag was in a box too large, flimsy and inadequately sealed. Because of a three inch gash in the paper bag, there was a trail of spilt soda ash 60ft up my walkway to my door. There is no telling how much was lost just getting to my house. This is a purchase from In the Swim. I’ve bought a lot from them in the past and this is the worst shipment I have ever gotten from anyone. They should query their supplier, Thatcher Co..
E**.
The 50 lb bag comes in a paper sack
Be aware, if you're ordering the 50 lb bag, it comes in a paper sack. It is not an easy to handle plastic bag as shown in the picture. It's very messy once it's open. You should plan to transfer it to a bucket or two.
O**Y
useful
Item arrived on time and in good condition
P**R
I have used In The Swim products for decades.
Product came as expected.
Trustpilot
2 weeks ago
5 days ago