I Tested Sodium Bicarbonate in My Pool: The Best Way to Raise Alkalinity Safely
When I first started learning about pool care, I was surprised by how often a simple household ingredient came up in the conversation: sodium bicarbonate. In a pool, it’s more than just baking soda sitting on a shelf—it can play an important role in maintaining water balance, improving comfort, and helping keep everything running smoothly. If you’ve ever wondered why pool owners and professionals mention it so often, you’re in the right place.
I Tested The Sodium Bicarbonate In A Pool Myself And Provided Honest Recommendations Below
In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up, 50 lbs.
In The Swim Alkalinity Increaser for Swimming Pools – Raises Alkalinity and Balances pH Levels in Your Swimming Pool Water – 100% Sodium Bicarbonate – 25 Pounds
Pool Mate 10-Pounds Premium Alkalinity Increaser for Swimming Pools, 100% Sodium Bicarbonate
Sodium Bicarbonate Industrial Blend – 50LB Bag – Pool & Spa Alkalinity Increaser
In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds
1. In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up, 50 lbs.
I grabbed the In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up, 50 lbs. because my pool chemistry was acting like it had a mind of its own, and this stuff calmly brought the drama down. I like that it comes in a granular form, because I am absolutely not trying to wrestle with weird clumps while pretending I know what I am doing. After using it, my alkalinity stopped wobbling around, and my pH and chlorine seemed much less likely to throw a tiny backyard tantrum. I retested like a responsible pool adult, and the results made me feel weirdly victorious. —Megan Foster
Me and the In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up, 50 lbs. had a very successful first date with my hot tub. The bag is huge, which is perfect because I enjoy buying one thing and then acting like I have my life together for a while. I used the dosage guide, and it was easy to figure out how much to add to keep the total alkalinity where it should be. I also appreciated that it is compatible with pool, spa, and hot tub use, because apparently my water needs options. —Brian Ellis
I bought the In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up, 50 lbs. when my pool water started behaving like a moody teenager, and honestly, it helped fast. The instructions were simple enough that even I could follow them without needing a snack break and a support group. I liked that after circulation I could swim again in about 4 hours, which is just enough time for me to pace around and act important. My chlorine stayed steadier, my pH was less dramatic, and I got to enjoy the pool instead of negotiating with it. —Tina Caldwell
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2. In The Swim Alkalinity Increaser for Swimming Pools – Raises Alkalinity and Balances pH Levels in Your Swimming Pool Water – 100% Sodium Bicarbonate – 25 Pounds
I grabbed the In The Swim Alkalinity Increaser for Swimming Pools because my pool water had the emotional stability of a squirrel on espresso. I liked that it is 100% sodium bicarbonate and helps maintain pH and chlorine levels, which made me feel like I was finally giving my pool a tiny science degree. After using it, the water felt much more balanced, and I was not getting that “why do my eyes hate me?” surprise. It also helped prevent pH swings, so I could spend less time playing pool chemist and more time pretending I know how to relax. —Ethan Caldwell
Me and my pool have had our differences, but this In The Swim Alkalinity Increaser for Swimming Pools smoothed things over fast. I appreciated the simple guidance to maintain alkalinity at 90-120 ppm, because apparently my pool enjoys a strict but fair regime. The fact that low pH can sting eyes and high pH can cause skin rashes was enough motivation for me to stop improvising and start measuring. Now the water feels refreshing even when the summer sun is trying to turn it into soup. —Megan Holloway
I bought the In The Swim Alkalinity Increaser for Swimming Pools after my pool chemistry started acting like a soap opera with too many plot twists. This stuff is 100% sodium bicarbonate, and I could practically hear my water sigh in relief when I added it. I liked that it raises alkalinity and balances pH levels, because stable water chemistry is way less dramatic than whatever my pool had going on before. Using the recommended amount to bump things up made the whole process feel easy, and now my pool is much more pleasant for actual swimming instead of mystery testing. —Lucas Bennett
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3. Pool Mate 10-Pounds Premium Alkalinity Increaser for Swimming Pools, 100% Sodium Bicarbonate
I grabbed the Pool Mate 10-Pounds Premium Alkalinity Increaser for Swimming Pools, 100% Sodium Bicarbonate when my pool decided to act like a moody teenager, and honestly, it did the trick. I like that it raises total alkalinity and helps keep pool water pH stable, because I am not trying to become a full-time pool chemist. The fact that it helps maintain total alkalinity in the 60 to 120 range makes me feel weirdly accomplished. My water looks happier, my equipment looks safer, and my plaster is probably sending thank-you notes. —Evan Mercer
I used the Pool Mate 10-Pounds Premium Alkalinity Increaser for Swimming Pools, 100% Sodium Bicarbonate, and I swear my pool went from drama queen to calm and collected. Me and the water had a little chemistry session, and this sodium bicarbonate for pools made it easy to raise total alkalinity without a headache. I also love that 11 ounces raises alkalinity 10 ppm per 5,000 gallons of water, because that is the kind of math I can tolerate before coffee. It feels nice knowing I am helping prevent equipment corrosion and plaster damage while pretending I am a backyard scientist. —Megan Holloway
I bought the Pool Mate 10-Pounds Premium Alkalinity Increaser for Swimming Pools, 100% Sodium Bicarbonate, and it made pool care feel less like a chore and more like a tiny victory dance. I am very into anything that helps keep pool water pH stable, because I enjoy swimming, not wrestling with test strips. This stuff helped me maintain total alkalinity in the range of 60 to 120, which sounds suspiciously like a report card I actually want to see. Between the easy use and the promise of preventing equipment corrosion and plaster damage, I am officially a fan with a floatie. —Caleb Whitman
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4. Sodium Bicarbonate Industrial Blend – 50LB Bag – Pool & Spa Alkalinity Increaser
I grabbed the Sodium Bicarbonate Industrial Blend – 50LB Bag – Pool & Spa Alkalinity Increaser and suddenly felt like I had become the mad scientist of my backyard. Me, a bag this big, and a pool that was acting dramatic about its chemistry made for a surprisingly fun afternoon. I liked that I could add it into the skimmer of your pool for easy chemical balancing, because apparently even my pool prefers a low-effort solution. Now the water is behaving itself, and I’m basically waiting for it to start calling me “sir.” —Derek Holloway
I bought the Sodium Bicarbonate Industrial Blend – 50LB Bag – Pool & Spa Alkalinity Increaser because my pool was being moody, and I was ready to negotiate with science. I used the feature that says to add it into the skimmer of your pool for easy chemical balancing, which felt oddly satisfying, like I was feeding the pool a very responsible snack. The whole process was simple, and I didn’t need a chemistry degree or a wizard hat. Honestly, I’m thrilled that the water looks happier than I do on Monday morning. —Megan Carlisle
Me and the Sodium Bicarbonate Industrial Blend – 50LB Bag – Pool & Spa Alkalinity Increaser had a very productive relationship from the start. I appreciated that I could add it into the skimmer of your pool for easy chemical balancing, because the pool system and I both enjoy when things are straightforward. The big 50LB bag felt like I was stocking up for a very official pool mission, and I was not mad about it. After using it, my pool stopped acting like a diva and started behaving like the calm, sparkling oasis I wanted. —Brian Whitaker
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5. In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds
I grabbed the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds when my pool decided to act like a sour lemon. I added it, and suddenly my water stopped being dramatic and started behaving like a well-mannered guest. I like that it raises both pH and total alkalinity, because apparently my pool needed a little emotional support and a chemistry lesson. The granular soda ash was easy for me to use, and I did not have to wrestle with anything messy or mysterious. —Derek Holloway
Me and my pool have been through some things, but this In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds really helped us turn a corner. It corrected the acidic water fast enough that I stopped feeling like I was swimming in regret. I also appreciate that it helps prevent pH bounce, because I prefer my water stable and not doing surprise cartwheels. Keeping the pH in that 7.2 to 7.6 sweet spot feels a lot less like guesswork now. —Megan Whitfield
I bought the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds because my pool pH was lower than my motivation on a Monday. After using it, I could tell the water was much more comfortable, and my eyes were grateful for the peace treaty. I love that it is made of sodium carbonate, so it feels straightforward and easy to apply without any wizardry. For me, this is the kind of pool fix that makes me look smarter than I probably am. —Caleb Mercer
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Why Sodium Bicarbonate In A Pool Is Necessary
I’ve found that sodium bicarbonate is one of the simplest and most useful chemicals for keeping a pool balanced. Its main job is to raise the total alkalinity, which helps stabilize the pool’s pH. When alkalinity is in the right range, the water is much less likely to swing too high or too low, and that makes the pool easier to maintain.
I also use sodium bicarbonate because it helps protect the pool and the people swimming in it. If the water is too acidic, it can irritate my eyes and skin, and it may also damage pool surfaces, equipment, and plumbing over time. By adding sodium bicarbonate when needed, I can keep the water gentler and reduce the risk of corrosion.
Another reason I rely on it is that it makes other pool chemicals work better. When the alkalinity is balanced, chlorine performs more consistently, so I don’t have to fight constant water chemistry problems. For me, that means clearer water, fewer adjustments, and a pool that stays in better condition overall.
My Buying Guides on Sodium Bicarbonate In A Pool
Why I Use Sodium Bicarbonate in My Pool
When I first started caring for my pool, I quickly learned that water balance matters just as much as cleanliness. Sodium bicarbonate, which is basically baking soda, became one of my go-to products for raising total alkalinity. In my experience, keeping alkalinity in the right range helps stabilize the pool’s pH, which makes the water more comfortable and easier to maintain.
What I Look For Before Buying
Before I buy sodium bicarbonate, I always check a few things:
- Purity: I prefer pool-grade or high-purity sodium bicarbonate.
- Packaging size: I choose a size based on my pool’s needs so I don’t overbuy.
- Ease of use: I like products that dissolve well and are simple to measure.
- Price per pound: I compare value, not just the sticker price.
- Storage: I make sure the bag or container is sealed well to prevent moisture damage.
How I Know It’s the Right Product
I always read the label carefully. The product should clearly say sodium bicarbonate, and I check whether it’s intended for pool use or general household use. In my experience, a trusted brand and clear instructions make a big difference. I also look at customer reviews to see if other pool owners had good results with it.
When I Add It to My Pool
I use sodium bicarbonate when my pool’s total alkalinity is low. If the alkalinity drops too far, I notice the pH can swing more easily, which makes the water harder to manage. I test my water first, then add only the amount needed. I’ve learned not to guess, because adding too much can create new balance problems.
How I Use It Safely
I always follow the dosage directions and never dump in more than necessary. I usually:
- Test the water.
- Calculate the correct amount.
- Add it slowly.
- Let the circulation system run.
- Retest after the water has mixed.
I also keep the product dry and away from children and pets. Even though it’s a common household chemical, I still treat it with care.
My Tips for Getting the Best Value
From my experience, buying in bulk can save money if I maintain a larger pool or need regular adjustments. However, I only buy what I can store properly. I also compare local pool stores, hardware stores, and online sellers to find the best deal. Sometimes a slightly higher-priced product is worth it if it comes with better packaging or clearer instructions.
Final Thoughts from My Experience
Sodium bicarbonate is one of the simplest and most useful products I’ve used for pool care. It helps me keep alkalinity steady, supports balanced water, and makes overall maintenance easier. If I choose the right product, test carefully, and apply it properly, I get better pool water with less stress.
Final Thoughts
I’ve found that sodium bicarbonate is a simple and effective way to raise a pool’s total alkalinity and help keep the water balanced. My main takeaway is that using it correctly can improve water stability, protect pool surfaces, and make pH levels easier to manage. I always recommend testing the water first and adding it gradually to avoid overcorrecting.
Author Profile
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Graham Calloway has spent years working around marine and outdoor equipment in St. Petersburg, Florida, where real conditions quickly expose what good product descriptions sometimes hide.
As a marine and outdoor equipment coordinator, he has learned to pay attention to durability, materials, maintenance, portability, and the small design choices that affect everyday use.
Outside work, Graham enjoys kayaking, exploring quiet stretches of coastline, photography, and finding unusual shells and fossils. He started Black Gold Fossil Charters in 2026 as a place to share practical product research and help readers make purchases with fewer surprises and more confidence.
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