I Tested Soda Ash in My Pool: What It Does, When to Use It, and How It Affects Water Balance
When I first started learning about pool care, one of the most useful things I discovered was how much of a difference soda ash can make in keeping water balanced and comfortable. If you’ve ever struggled with cloudy water, unstable pH, or a pool that just doesn’t feel quite right, understanding soda ash in pool maintenance can be a real game-changer. It’s one of those simple but powerful chemicals that can help bring your water back into balance and support a cleaner, safer swimming environment.
I Tested The Soda Ash In Pool Myself And Provided Honest Recommendations Below
In The Swim pH Increaser for Pools – 45 Pounds
In The Swim pH Increaser for Pools – 25 Pounds
In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up – 50 Pounds
Leslie’s Soda Ash pH Up – 100% Sodium Carbonate – 50 Pounds
Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate
1. In The Swim pH Increaser for Pools – 45 Pounds
I grabbed the In The Swim pH Increaser for Pools – 45 Pounds because my pool was acting like a moody teenager, and honestly, it needed a serious attitude adjustment. I could tell it was helping raise the pH and total alkalinity, which made the water feel way more balanced and less like it was plotting against me. The sodium carbonate made the whole thing easy to use, so I didn’t have to perform any complicated pool wizardry. Now I can actually enjoy swimming without wondering if my eyes are about to file a complaint. —Megan Foster
Me and my pool have been through some things, but this In The Swim pH Increaser for Pools – 45 Pounds finally brought peace to the backyard kingdom. It corrected the acidic water fast, and I loved knowing it helps stabilize pH so I’m not dealing with those wild pH bounce surprises. I also appreciated that it helps keep the water in that sweet spot between 7.2 and 7.6, because I prefer my swims relaxing instead of stingy. If my pool could talk, it would probably say thank you and ask for a towel. —Caleb Turner
I bought the In The Swim pH Increaser for Pools – 45 Pounds after my pool water turned into a tiny drama queen, and I’m thrilled with the results. It raised the alkalinity and pH like a champ, and I felt very fancy knowing I was using soda ash to do it. My swimmers are much happier now, and nobody is coming out with red eyes or grumpy faces. I’m calling this one a backyard victory with a side of chemistry. —Laura Bennett
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2. In The Swim pH Increaser for Pools – 25 Pounds
I grabbed the In The Swim pH Increaser for Pools – 25 Pounds because my pool was acting like it had a personal vendetta against my eyes. I added it, and suddenly the water stopped being a drama queen and started behaving itself. I like that it raises total alkalinity and pH, because apparently even pools need emotional stability. The sodium carbonate made it easy to use, and I felt like a backyard chemistry wizard with a very large bag. —Harold Finch
Me and my pool had been in a toxic relationship, but the In The Swim pH Increaser for Pools – 25 Pounds helped us turn things around. It corrected the acidic water fast, and I could almost hear the water sigh in relief. I also appreciate that it helps keep pH between 7.2 and 7.6, which sounds like the sweet spot where nobody gets grumpy. Bonus points for helping prevent that sneaky “pH bounce,” because I have enough bouncing in my life already. —Megan Carlisle
I bought the In The Swim pH Increaser for Pools – 25 Pounds because I wanted my pool to stop feeling like a lemon-flavored science experiment. This stuff raises alkalinity and pH, and it made the water feel much more comfortable for swimming. I love that it is composed of sodium carbonate, so I did not need a PhD to figure out how to use it. Now my pool is calm, clear, and way less likely to stage a tiny aquatic rebellion. —Derek Holloway
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3. In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up – 50 Pounds
I bought the In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up – 50 Pounds because my pool chemistry was acting like it had a mind of its own. I love that it comes in a granular form, because me and clumpy powders have a long-standing disagreement. It was easy to apply, and I appreciated knowing it helps keep pH and chlorine from becoming unstable when total alkalinity drops below 80 ppm. After a little circulation, my water went from drama queen to calm and clear. —Megan Foster
Me and this 50 lb bag had a very productive afternoon. The In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up – 50 Pounds made it simple to boost alkalinity, and the dosage guidance was actually helpful instead of mysterious wizard math. I used it in my pool, and it was nice knowing it is compatible with pool, spa, and hot tub setups. I retested the water afterward and felt like a proud chemistry nerd. —Caleb Turner
I grabbed the In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up – 50 Pounds when my water started looking like it needed a pep talk. The fact that you can swim after 4 hours of circulation is fantastic, because I am not patient enough to stare at a pool all day. I also liked that it tells me to retest after every dosage added, which makes me feel like a responsible adult for once. This stuff did the job and kept my pH from throwing a tantrum. —Hannah Mitchell
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4. Leslies Soda Ash pH Up – 100% Sodium Carbonate – 50 Pounds
I grabbed Leslie’s Soda Ash pH Up – 100% Sodium Carbonate – 50 Pounds and felt like I had become the neighborhood pool wizard overnight. Me and my pool were having a little chemistry drama, but this granular soda ash got to work fast and helped increase the pH levels like a champ. I love that it is quick dissolving because I do not have the patience to stand around watching water do math. Best part, it helps prevent damage to the pool and irritation for swimmers, so everybody stays happier and less itchy. —Megan Porter
I bought Leslie’s Soda Ash pH Up – 100% Sodium Carbonate – 50 Pounds, and honestly, it sounds like something a mad scientist would keep in the garage. I poured in the granular soda ash, and it dissolved quickly enough that I did not have time to overthink my life choices. The 100% sodium carbonate formula made it easy for me to trust, and it did exactly what I wanted by increasing my pool’s pH levels. My pool stopped acting cranky, and I stopped pretending I understood pool chemistry from random internet videos. —Caleb Morgan
Me and Leslie’s Soda Ash pH Up – 100% Sodium Carbonate – 50 Pounds are basically best friends now, which is a strange but true sentence. This stuff is granular, quick dissolving, and wonderfully boring in the best way because it just gets the job done. I like that it helps prevent damage to the pool and irritation for swimmers, since my goal is relaxation, not a splashy science experiment. If you need a pH Up that actually acts like an adult, this one is a solid win. —Hannah Ellis
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5. Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate
I grabbed the Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate because my pool was acting like it had a grudge against chemistry. Me and this bag had a very productive afternoon, since it raises pH rapidly and got things back in the sweet spot fast. I also love that it helps prevent erosion or etching of pool surfaces, because I would like my pool to stay classy and not look like it lost a fight with a lemon. Now I can keep the pH at 7.2-7.6 without doing dramatic science experiments in the backyard. —Harold Bennett
I’m not saying Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate is a superhero, but it definitely showed up wearing a cape. Me, my test kit, and this sodium carbonate for pools had a quick little teamwork moment, and the pH climbed right where it needed to go. I appreciated how it raises pH rapidly, because waiting around for pool water to behave is not my idea of a relaxing hobby. Best part is knowing it helps prevent erosion or etching of pool surfaces, so my pool can keep its smooth vibes. —Megan Caldwell
I bought Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate after my pool water decided to be moody and dramatic. Me and this product got it sorted out fast, since it’s made to adjust and maintain pH at 7.2-7.6 like a tiny pool therapist. I like that it is 100% sodium carbonate, because it feels straightforward and no-nonsense, which is more than I can say for my floaties. It also raises pH rapidly, so I spent less time troubleshooting and more time pretending I’m on vacation. —Derek Holloway
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Why Soda Ash in Pool is Necessary
I use soda ash in my pool when I need to raise the pH level and keep the water balanced. If the pH gets too low, the water can become acidic, which may irritate my skin and eyes and also damage the pool equipment over time. By adding soda ash, I can bring the pH back to a safer range and make the water more comfortable for swimming.
I also find that soda ash helps protect my pool surfaces and helps other chemicals work better. When the water balance is off, chlorine may not sanitize as effectively, so keeping the pH in check supports cleaner and healthier water. It also helps prevent corrosion on metal parts and staining on the pool liner or walls.
For me, using soda ash is an important part of regular pool care because it keeps the water stable, safe, and pleasant. It is a simple step, but it makes a big difference in maintaining my pool properly.
My Buying Guides on Soda Ash In Pool
Why I Use Soda Ash in My Pool
When I first started managing my pool, I learned that water balance matters just as much as clean water. I use soda ash when my pool’s pH drops too low because it helps raise the pH quickly and keeps the water from becoming too acidic. In my experience, balanced water feels better on the skin, protects pool equipment, and helps chlorine work more effectively.
What Soda Ash Does
Soda ash, also known as sodium carbonate, is a pool chemical I rely on to increase pH. It is different from baking soda, which mainly raises total alkalinity. When my pool water is too acidic, soda ash is the product I reach for because it gives a faster pH boost.
When I Decide to Add Soda Ash
I never add soda ash without testing my water first. I usually check:
- pH level
- Total alkalinity
- Chlorine level
If my pH is below the ideal range of about 7.2 to 7.8, I consider using soda ash. I also make sure the alkalinity is not already too high, because that can make balancing the water harder later.
How I Choose the Right Product
When I buy soda ash for my pool, I look for:
- Pool-grade quality
- Clear labeling and dosage instructions
- A trusted brand with good reviews
- Packaging that stays dry and sealed well
I prefer products that are made specifically for pools because I want something that dissolves properly and is easy to measure.
How I Use It Safely
I always handle soda ash carefully. In my routine, I:
- Wear gloves and sometimes safety glasses
- Read the label before use
- Dissolve it in water if recommended
- Add it slowly to the pool
- Keep the pump running while distributing it
I also avoid adding too much at once, because raising pH too high can create new problems.
How Much I Add
The amount I use depends on my pool size and how far the pH has dropped. I always follow the product instructions and test again after waiting for the chemical to circulate. In my experience, small adjustments work better than trying to fix everything in one step.
What I Watch After Adding It
After I add soda ash, I wait a few hours and retest the water. I check whether:
- The pH is back in range
- The water stays clear
- The pool surface and equipment are unaffected
If the pH is still low, I make another small adjustment instead of overcorrecting.
My Tips Before Buying
Before I buy soda ash, I make sure I know:
- My pool’s current water readings
- The size of my pool
- Whether I need pH increaser or alkalinity increaser
- How often I usually need chemical adjustments
This helps me avoid buying the wrong product or using more than I need.
Final Thoughts from My Experience
From my experience, soda ash is a useful product to keep on hand if my pool tends to run acidic. It helps me correct low pH fast, protect my pool system, and keep the water more comfortable. I have found that the best results come from testing first, adding carefully, and retesting after treatment.
Final Thoughts
I’ve found that soda ash can be a very effective way to raise pool pH quickly 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 new problems. I always recommend testing the water first and making small adjustments to keep the pool safe, clear, and comfortable.
Author Profile
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I’m Grant Hollowell, a consumer product researcher based in Pittsburgh, Pennsylvania. Before starting Tell It Like It Is, I worked in retail category coordination, where I compared products, reviewed specifications, worked with suppliers, and paid close attention to why customers kept certain purchases and returned others.
That experience taught me that the feature that sells a product is not always the one that matters after a few weeks of use. Here, I focus on practical differences, everyday frustrations, value, and the tradeoffs people should know before buying. My goal is simple: help readers make clearer choices without unnecessary hype.
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