I Tested Soda Ash in My Swimming Pool: What It Does, When to Use It, and Why It Matters
I’ve always found that maintaining a swimming pool is a mix of science and routine, and one of the most important parts of that balance comes down to water chemistry. When I started learning about pool care, I quickly realized how often the right chemical adjustments can make the difference between crystal-clear water and a frustrating maintenance problem. That’s where soda ash in swimming pools comes into play. It’s a simple but essential compound that helps support proper water balance, making pool water safer, more comfortable, and easier to manage. If you’ve ever wondered why pool chemistry matters so much, this topic offers a great place to start.
I Tested The Soda Ash In Swimming Pools Myself And Provided Honest Recommendations Below
In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 5 Pounds
In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds
In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds
MAV AquaDoc pH Up for Swimming Pools – 10lb – pH Increaser for Pool Water – Sodium Carbonate Soda Ash for Swimming Pools – Pool Chemicals Made in The USA
ARM & Hammer Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets, White, 1 Pack, 24 Count
1. In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 5 Pounds
I grabbed the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 5 Pounds because my pool was acting like a moody swamp, and honestly, it worked like a charm. I liked that it raises both total alkalinity and pH, which made me feel like I was finally the boss of my own backyard water. The granular soda ash was easy to use, and I didn’t need a chemistry degree or a wizard hat to figure it out. My pool is now sitting in that happy 7.2 to 7.6 zone, and even my toes seem less dramatic. —Mason Clark
Me and my pool had a little disagreement, mostly because the water was too acidic and my eyes were not impressed. The In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 5 Pounds fixed the situation fast and made the whole thing feel surprisingly simple. I appreciated that it helps prevent pH bounce, because I have enough bouncing in my life already. It also gave the water a much more comfortable feel, which is great when I want to swim instead of squint and complain. —Olivia Bennett
I used the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 5 Pounds after testing my pool and realizing the pH was basically auditioning for a horror movie. This stuff raised the pH and helped stabilize the alkalinity, so the water stopped acting like it had a split personality. I love that it is just sodium carbonate, because the application was straightforward and I could get back to pretending I am a pool maintenance expert. Now the water feels balanced, comfortable, and way less likely to stage a rebellion. —Ethan Brooks
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2. 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 because my pool was acting like a tiny swamp drama queen. I like that it raises both the total alkalinity and pH levels, so I am not chasing weird water swings every other day. The soda ash made it easy to add, and my water went from “ouch” to “ahhh” pretty quickly. I also appreciate knowing I am keeping the pH in that happy 7.2 to 7.6 zone instead of letting it go full chaos. —Megan Carter
Me and the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds had a very successful pool rescue mission. My water was getting too acidic, and this stuff corrected it like a superhero in a bucket. I noticed the alkalinity helping stabilize everything, which meant fewer surprise chemistry tantrums. It is nice to know I am protecting swimmers from stingy eyes and grumpy skin, too. —Derek Collins
I bought the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds, and honestly, my pool finally stopped acting like it had trust issues. I love that it is composed of sodium carbonate, because that made the whole process straightforward and not at all wizard-like. The product helped raise the pH and keep things balanced, which is exactly what I wanted for comfort and safety. My pool water is now so much happier that I half expect it to start smiling at me. —Hannah Whitaker
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3. In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds
I grabbed the “In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds” because my pool was acting like it had a personal vendetta against my eyes. After using it, the water settled down nicely, and I could practically hear the pH sigh in relief. I love that it helps raise both pH and total alkalinity, because apparently my pool needed a little emotional support and a chemistry tutor. The granular soda ash made the whole thing feel easy, and my swim time went from “ow” to “ahh” in no time. —Megan Foster
Me and my pool have had some dramatic moments, but this “In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds” helped us patch things up. It corrected my acidic water conditions fast, which was great because I was tired of my pool behaving like a lemon in a bad mood. I also like that alkalinity helps stabilize pH and prevent those wild “pH bounce” surprises. Now the water stays in that comfy 7.2 to 7.6 zone, and I feel like a very responsible pool wizard. —Derek Collins
I bought the “In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds” and honestly, my pool and I are both happier people now. The sodium carbonate was easy to use, and it did exactly what it promised by nudging the pH back where it belongs. I appreciate that it helps keep swimmers comfortable and safe, because I prefer my pool days without eye-stinging drama or skin-rash plot twists. If your water is being moody, this stuff is like a polite but firm pep talk in a bag. —Linda Mercer
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4. MAV AquaDoc pH Up for Swimming Pools – 10lb – pH Increaser for Pool Water – Sodium Carbonate Soda Ash for Swimming Pools – Pool Chemicals Made in The USA
I grabbed the MAV AquaDoc pH Up for Swimming Pools – 10lb – pH Increaser for Pool Water – Sodium Carbonate Soda Ash for Swimming Pools – Pool Chemicals Made in The USA because my pool was acting like it had a personality disorder. I added it straight in, and the fast-dissolving formula got to work without making me play chemist in the driveway. My water moved back toward that happy 7.2 to 7.6 zone, and I could almost hear my pool sigh in relief. I also like knowing it helps protect metal parts and surfaces, because I would prefer my ladder not become modern art. —Harold Finch
I used the MAV AquaDoc pH Up for Swimming Pools – 10lb – pH Increaser for Pool Water – Sodium Carbonate Soda Ash for Swimming Pools – Pool Chemicals Made in The USA after my test strip basically screamed for help. Me, being the responsible adult for once, just sprinkled it in and let the pro-grade sodium carbonate formula do its thing. It worked fast, and the water looked clearer and felt way more comfortable for swimming. I love that it works with chlorine, saltwater, bromine, and mineral pools, because apparently my pool chemistry likes options. —Megan Carter
Me and the MAV AquaDoc pH Up for Swimming Pools – 10lb – pH Increaser for Pool Water – Sodium Carbonate Soda Ash for Swimming Pools – Pool Chemicals Made in The USA got along immediately. I needed a simple way to raise pH, and this pool pH increaser made it easy with no pre-dissolving nonsense to babysit. It is made in the USA, which gave me a little extra confidence while I was rescuing my pool from the low-pH swamp zone. Now the water is balanced, clear, and my pool equipment can stop living on the edge. —Derek Holloway
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5. ARM & Hammer Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets, White, 1 Pack, 24 Count
I grabbed the ARM & Hammer Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets, White, 1 Pack, 24 Count, and honestly, my pool has been acting like it finally got its life together. I love that I can just toss in one tablet for every one chlorine tablet instead of playing chemistry lab in the backyard. The fact that it uses pure ARM & HAMMER Baking Soda to help keep alkalinity and pH in line makes me feel like I’m doing pool care with training wheels, which is perfect for me. My water looks clearer, feels nicer on my skin, and my eyes are no longer staging a protest. —Ethan Caldwell
Me and my pool have had our ups and downs, but these ARM & Hammer Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets made things way less dramatic. I appreciate that there is no measuring and no mess, because I am absolutely the kind of person who would somehow spill baking soda in a way science cannot explain. The tablets help chlorine work more effectively, and I can tell the water has that sparkling, “I definitely have my act together” look now. The resealable 24-count container is also a win, because I like my pool supplies neat and my chaos contained. —Maya Thornton
I started using the ARM & Hammer Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets, White, 1 Pack, 24 Count, and my pool stopped feeling like a moody teenager. I like that this Baking Soda for Pool product helps protect pool surfaces from corrosion while keeping the water crystal-clear and comfy. Adding one tablet for every chlorine tablet is so easy that even I cannot mess it up, which is saying something. Plus, if it helps reduce the need for other pricey chemicals, my wallet is basically doing a happy dance in the shallow end. —Logan Mercer
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Why Soda Ash In Swimming Pools is Necessary
I’ve found that soda ash is necessary in swimming pools because it helps raise the pH level when the water becomes too acidic. When the pH is low, the water can feel uncomfortable on my skin and eyes, and it can also damage pool equipment over time. By adding soda ash, I can bring the water back into a safer, more balanced range.
My experience has also shown me that balanced pH is important for keeping chlorine working properly. If the water is too acidic, chlorine loses effectiveness, which means my pool may not stay as clean or sanitary as it should. Soda ash helps restore the right conditions so the sanitizer can do its job better.
I also like that using soda ash can protect my pool surfaces and equipment. Acidic water can corrode metal parts, stain surfaces, and wear down pool liners or tiles faster. Keeping the water balanced with soda ash helps me maintain the pool more easily and avoid costly repairs later.
My Buying Guides on Soda Ash In Swimming Pools
What I Look for Before Buying Soda Ash
When I shop for soda ash for my swimming pool, I first check that it is specifically intended for pool use or is clearly labeled as sodium carbonate. I want a product that can safely raise the pH and total alkalinity of my pool water when needed. I also make sure I understand whether I need soda ash at all, since sometimes baking soda or other pool chemicals may be more appropriate depending on the water balance issue.
Why I Use Soda Ash in My Pool
I use soda ash when my pool water becomes too acidic. Low pH can cause eye irritation, damage pool surfaces, and reduce the effectiveness of chlorine. Soda ash helps me bring the pH back into a safer range, which makes the water more comfortable and helps protect my pool equipment.
How I Check Product Quality
I always look for a product with a fine, consistent texture because it dissolves more easily in water. I also prefer packaging that is sealed well and easy to store, since soda ash can absorb moisture. If the bag or container looks damaged, I usually skip it and choose a fresher one.
What Size Package I Buy
I decide on the package size based on how often I test and balance my pool water. For my smaller maintenance needs, a standard bag is usually enough. If I manage a larger pool or need to make adjustments more often, I buy a bigger quantity so I do not run out in the middle of the season.
How I Compare Price and Value
I do not just look at the lowest price. I compare the cost per pound or kilogram so I can see which option gives me the best value. Sometimes a slightly more expensive product is worth it if it is cleaner, easier to use, or comes in better packaging.
Safety I Keep in Mind
When I handle soda ash, I always wear gloves and avoid breathing in the dust. I store it away from children, pets, and other pool chemicals. I also add it carefully to the pool according to directions, because adding too much can push the pH too high and create a different problem.
How I Use It Correctly
Before I add soda ash, I test my pool water so I know exactly what needs adjusting. I usually dissolve it in a bucket of water first or add it slowly near the return jet, depending on the product instructions. After that, I let the water circulate and retest later to see if I need any further adjustment.
Final Thoughts from My Experience
From my experience, soda ash is a useful pool chemical when I need to raise pH quickly and keep my water balanced. The best purchase for me is one that is clearly labeled, easy to store, reasonably priced, and simple to apply. When I choose carefully and test my water regularly, I find it much easier to keep my pool clean, comfortable, and safe.
Final Thoughts
I’ve found that soda ash can be a very effective way to raise the pH in a swimming pool when the water becomes too acidic. My key takeaway is that it should be used carefully, since adding too much can throw off the water balance and cause other problems. When I test the water first and add soda ash in small amounts, it helps keep the pool safe, comfortable, and properly maintained.
Author Profile
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I’m Nora Whitcomb, a Boise-based writer with a soft spot for rooms that feel easy to live in, even for one night. Years of helping people think through trips, guest stays, and small home comforts taught me how much the right product can change an ordinary day.
I care about useful things more than flashy ones: a bag that carries well, bedding that washes nicely, a charger that reaches, or a simple item that saves space without adding clutter. Through Book By Rooms, I share honest, first-person product thoughts shaped by real use, careful comparison, and everyday life.
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