

💧 Keep your pool perfectly balanced and summer-ready—because your water deserves the best!
In The Swim Solvay Bicar Sodium Bicarbonate is a 50 lb granular alkalinity increaser designed to stabilize pH and chlorine levels in pools, spas, and hot tubs. It raises alkalinity by approximately 10 ppm per 1.5 pounds per 10,000 gallons, ensuring safe, balanced, and refreshing water. Easy to apply and fast-acting, it helps prevent corrosive water and scaling, making it a must-have for maintaining optimal water chemistry.
| ASIN | B07KRH14W5 |
| Best Sellers Rank | #8,266 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #35 in Swimming Pool Balancers |
| Brand | In The Swim |
| Customer Reviews | 4.7 4.7 out of 5 stars (927) |
| Item Form | Granular |
| Item Weight | 51 pounds |
| Item model number | 81292 |
| Manufacturer | In The Swim |
| Number of Items | 1 |
| Product Benefits | Alkalinity Increaser |
| Product Dimensions | 19.5 x 14.6 x 3 inches |
| UPC | 815100025538 |
| Unit Count | 800 Ounce |
M**N
Good bulk supply of Sodium Bicarbonate for pool alkalinity
I have purchased this 50 lb bag many times (over 10) for pool Alkalinity balancing since 2022. I store it inside my house, in a Vestil 3.5G plastic PAIL-SCR-35-W container (ASIN: B0052P26YG) in order to keep it away from humid air. Not all of the 50 lbs fits in this 3.5G container, so the remainder (maybe 8-9 lbs) I put in an outside container that I grab from for the pool. Storing it this way I have never had an issue with humidity affecting the product. This Sodium Bicarbonate product works great. It raises the alkalinity as much as I would expect (performs as expected). The price is one of the lowest I can find for this size (delivered), making it a great deal when compared to other options for raising pool alkalinity. Will continue to purchase.
C**N
A Safer Alternative To More Dangerous Chemicals
The 50 lbs of baking soda will fit in a 5 gallon hard plastic bucket which I believe will make it easier to store and keep the baking soda safer than just leaving it in the bag. I also use a hard plastic scoop to get the baking soda out of the bucket. I am satisfied that the product is less expensive and safer to use than other chemical alternatives. My first use helped bring my PH and alkalinity levels into the “okay” range. The baking soda dissipates quickly when it is dispersed into the pool water.
R**2
Good Quality Baking Soda - Don't Waste Time with Arm & Hammer
It's.... baking soda. But it is good baking soda. Solved my pH problem. Make sure you break it up or use a sifter. Dissolves quickly.
J**O
Works well
We use this to neutralize the cows & donkey urine, in our dirt floor barn. Works great Fair price Quick shipping No complaints
B**Y
Excellent Quality but the bag…
Product appears to be of good quality, however the bag had opened during shipping and made a serious mess when I opened the box. Maybe just an isolated case.
D**Y
Cost effective
Very economical when compared to our local pool supply chain.
K**M
Works great for the Pool
Don't fall for the Leslie's Pool scam of Alkalinity up that cost a ton more. Both products are 100% baking soda and there is no reason to spend a ton of money for a fancy name and a plastic bucket from Leslie's.
J**N
Well packaged.
Nice product well packaged. Bag in a trash bag inside a sturdy box. No spillage. Bag has built in pour spout. Great. Very happy.
Trustpilot
2 weeks ago
2 months ago