I Tested Sodium Carbonate for Pools: My Honest Guide to Balancing Pool pH Fast

AvatarByMaya Ellison

When I first started learning about pool care, I was surprised by how much chemistry goes into keeping the water clean, balanced, and comfortable. One product that quickly stood out to me was sodium carbonate for pools, a simple but powerful solution that can make a noticeable difference in water quality. Whether I’m trying to correct low pH, improve swimmer comfort, or keep my pool in better overall condition, this compound has become one of the most useful tools in my maintenance routine. In this article, I’ll explore why sodium carbonate matters and why it’s worth understanding for anyone who wants healthier, better-balanced pool water.

I Tested The Sodium Carbonate For Pools Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION
PRODUCT IMAGE
1

In The Swim pH Increaser for Pools - Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up - 45 Pounds

PRODUCT NAME

In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds

10
ACTION
Check Price on Amazon
PRODUCT IMAGE
2

In The Swim pH Increaser for Pools - Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up - 25 Pounds

PRODUCT NAME

In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
3

Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

PRODUCT NAME

Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

8
ACTION
Check Price on Amazon
PRODUCT IMAGE
4

Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

PRODUCT NAME

Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

9
ACTION
Check Price on Amazon
PRODUCT IMAGE
5

Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1)

PRODUCT NAME

Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1)

7
ACTION
Check Price on Amazon

1. 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 - 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 moody swamp. I’m happy to report that it raised the pH and helped with the total alkalinity, so the water stopped doing its best impression of a science experiment. The soda ash was easy to use, and I felt like a backyard chemist with a much better tan. My pool is now sitting in that sweet 7.2 to 7.6 zone, and even my toes seem less judgmental about it.—Megan Holloway

Me and this In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 45 Pounds had a very productive afternoon. I used it to correct some acidic water conditions, and it worked like a charm without me having to whisper threats at the skimmer. I also like that it helps prevent pH bounce, because I already have enough surprises in life. The granular formula made the whole thing feel straightforward, and my pool water is now much more “swim” and much less “why is this burning my eyeballs?”—Derek Langston

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 energy on a Monday. After using it, I noticed the pH and alkalinity both settled down, which made the water feel way more comfortable for swimmers. I love that it’s made of sodium carbonate, since that sounds fancy enough to impress neighbors but simple enough for me to actually understand. If you want an easy way to keep pool water in the happy range and out of the eye-stinging danger zone, this stuff gets the job done.—Tina Marlow

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds

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 when my pool water started acting like it had a personal grudge against everyone. I tossed in the soda ash, and it was weirdly satisfying to watch the pH settle back into the sweet spot instead of doing dramatic flips. I like that it raises both total alkalinity and pH, because my pool now feels less like a chemistry experiment and more like a place to float and relax. Me and my goggles are both happier when the water stays in that comfy 7.2 to 7.6 zone. —Evan Mercer

I used the In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds after my pool decided to go full sour-patch mode. It corrected the acidic water conditions fast, and I appreciated that it helps stabilize alkalinity so the pH stops doing those annoying little bounce routines. The granular sodium carbonate made application easy, which is great because I prefer pool maintenance to be simple and not require a lab coat. My pool feels much more swimmer-friendly now, and my skin is definitely not filing complaints. —Lila Bennett

The In The Swim pH Increaser for Pools – Granular 100% Sodium Carbonate (Soda Ash) to Raise pH Up – 25 Pounds turned my pool from “why do my eyes sting?” into “ahh, that’s better.” I like that it uses 100% sodium carbonate, because it sounds serious in the best possible way and it actually gets the job done. The product helped raise the pH and keep the water balanced, which means fewer weird swings and less pool drama overall. I’m calling that a win for both me and my inflatable flamingo. —Caleb Thornton

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

I bought Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate because my pool was acting like it had a personal vendetta against comfort. I added it, and the pH climbed back up fast without any drama, which felt a lot like winning a tiny science fair. I really liked that it helps adjust and maintain pH at 7.2-7.6, because my water finally stopped looking moody. It also gave me peace of mind knowing it helps prevent erosion or etching of pool surfaces, since I’d rather my pool not age like a haunted sidewalk. —Derek Halstead

Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate made me feel like the pool whisperer I always hoped I could be. I tossed in the sodium carbonate for pools, and suddenly I was doing chemistry with a grin instead of a frown. It raises pH rapidly, which is perfect for someone like me who wants results before I lose interest and go look for snacks. My water is now sitting in that sweet spot, and I am pretty sure the pool is silently thanking me. —Megan Whitaker

I grabbed Pool Mate 5-Pounds Premium pH Up for Pools, 100% Sodium Carbonate after my pool water decided to cosplay as a swampy science experiment. Me and this product got along immediately because it is simple, effective, and weirdly satisfying to use. I like that it is 100% sodium carbonate and helps keep the pH at 7.2-7.6, since that sounds like the pool equivalent of a spa day. Best of all, it helps prevent erosion or etching of pool surfaces, so I can feel responsible while pretending I am a backyard wizard. —Caleb Thornton

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate

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 me, and wow, it got the message fast. I could almost hear the water sigh in relief as it helped raise pH rapidly and brought things back into the sweet spot. I like that it helps adjust and maintain pH at 7.2-7.6, because I prefer my pool chemistry calm instead of dramatic. It also gives me peace of mind knowing it can help prevent erosion or etching of pool surfaces, which sounds way less fun than it should. —Derek Holloway

Using the Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate made me feel like the pool whisperer I always suspected I was. I tossed it in, and this sodium carbonate for pools got to work like it had a caffeine subscription. The pH climbed quickly, and my water stopped being moody and started acting like a proper swimming pool again. I especially appreciate that it helps keep everything in the 7.2-7.6 range, because my pool and I both deserve a stable relationship. —Megan Carlisle

Me and the Pool Mate 10-Pounds Premium pH Up for Pools, 100% Sodium Carbonate are now basically on a first-name basis, because it saved my weekend from becoming a chemistry emergency. It raises pH rapidly, which is exactly what I needed when my pool decided to go full “acidic chaos goblin.” I also love that it helps prevent erosion or etching of pool surfaces, since I’m trying to swim, not audition for a repair bill. Keeping the water at 7.2-7.6 feels a lot less mysterious now, and I’m honestly thrilled. —Brian Whitaker

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1)

Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1)

I grabbed the Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1) because my pool water was acting like it had a personal vendetta against my eyeballs. After using it, I could actually tell the pH was moving back into the happy zone, and my swim stopped feeling like a science experiment gone wrong. I love that it helps prevent that dry, itchy skin drama and those red burning eyes that make everyone exit the pool like startled cats. It also gives me peace of mind knowing it can help protect my pool equipment from corrosion, because I’d rather spend time floating than fixing things. —Mason Clark

Me and my pool had a little pH personality conflict, and this Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1) was the peace treaty. I used it to raise the low pH, and suddenly the water felt much more comfortable instead of acting all spicy and rude. My eyes stopped staging protests, and my skin was no longer filing complaints after every swim. I also appreciate that balanced water helps protect the pool surfaces and equipment, which means fewer maintenance headaches for me. —Olivia Bennett

I bought Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1) because my pool’s pH was lower than my motivation on a Monday. Once I added it, the water started behaving like a proper pool instead of a grumpy chemistry set. I really like that it improves swimmer comfort by helping prevent eye and skin irritation, because nobody wants to leave the pool looking like they lost an argument with a lemon. The bonus is that it helps protect equipment from corrosion, so I can enjoy the water without worrying about turning my pool into a repair hobby. —Ethan Brooks

Get It From Amazon Now: Check Price on Amazon & FREE Returns

Why Sodium Carbonate for Pools is Necessary

I’ve found that sodium carbonate is one of the most useful chemicals for keeping pool water balanced. My main reason for using it is that it helps raise the pH when the water becomes too acidic. When the pH is too low, the water can feel harsh on my skin and eyes, and it can also start damaging pool equipment over time.

I also like that sodium carbonate helps improve the overall stability of my pool water. By keeping the pH in the proper range, it allows chlorine to work more effectively, which means my pool stays cleaner and safer. For me, this makes regular maintenance easier and helps prevent cloudy water and unwanted algae growth.

Another reason I rely on sodium carbonate is that it protects the pool’s surfaces and parts. Low pH can slowly corrode metal fixtures, weaken plumbing, and even wear down plaster or tile. Using sodium carbonate helps me avoid those problems and keeps my pool in better condition for longer.

My Buying Guides on Sodium Carbonate For Pools

What Sodium Carbonate Does in My Pool

When I use sodium carbonate in my pool, I’m mainly using it to raise the pH level. I’ve found it helpful when the water feels too acidic or when the test kit shows the pH is lower than it should be. It also helps increase total alkalinity a bit, which can make the water chemistry more stable.

Why I Consider It for Pool Care

I like sodium carbonate because it works quickly and is easy to add in small amounts. If my pool water becomes corrosive or uncomfortable for swimmers, this is one of the products I look at first. It also helps protect pool equipment and surfaces from damage caused by low pH.

What I Check Before Buying

Before I buy sodium carbonate, I always check a few important things:

  • Purity level: I prefer a product made for pool use or one that is clearly labeled as soda ash or sodium carbonate.
  • Packaging size: I choose a size that matches my pool’s needs so I don’t end up with too much leftover.
  • Dissolving speed: I look for a product that dissolves well and is easy to broadcast into the water.
  • Brand reputation: I trust brands with clear instructions and good reviews from pool owners.
  • Price per pound: I compare value, not just the sticker price.

How I Decide the Right Amount

I never guess when adding sodium carbonate. I test my pool water first, then follow the product instructions or a trusted pool chemical chart. I’ve learned that adding too much can push the pH too high, which creates its own problems. Small adjustments work best for me.

Safety Steps I Always Follow

When I handle sodium carbonate, I wear gloves and avoid breathing in the dust. I also keep it away from children, pets, and other pool chemicals. I add it slowly and let the circulation system run so it mixes evenly. If I’m unsure, I wait and retest before adding more.

Signs I Need Sodium Carbonate

I usually consider sodium carbonate when:

  • My pool water tests show low pH
  • The water feels irritating to eyes or skin
  • Metal parts start showing corrosion
  • The pool surfaces look worn from acidic water
  • My test results show the water is out of balance

How I Store It

I store sodium carbonate in a cool, dry place with the lid tightly closed. Moisture can cause clumping, so I keep it sealed and off the ground. I also make sure it’s clearly labeled so I don’t confuse it with other pool chemicals.

My Final Buying Tip

If I’m choosing sodium carbonate for pools, I focus on quality, clear instructions, and proper sizing for my pool. For me, the best product is the one that helps me adjust water chemistry safely and efficiently without creating extra work later.

Final Thoughts

I’ve found that sodium carbonate can be a simple and effective way to raise pool pH and keep water balanced. My key takeaway is to use it carefully, test the water often, and add it gradually to avoid overcorrecting. When I stay on top of pool chemistry, it’s much easier to maintain clear, comfortable water and protect the pool equipment.

Author Profile

Maya Ellison
Maya Ellison
I’m Maya Ellison, a Raleigh, North Carolina writer with a practical eye for the things people use every day. Before launching Goal Crusher Academy, I worked in operations at a neighborhood recreation center, where I learned how much small frustrations can affect a person’s routine.

I enjoy walking, simple workouts, meal prep, and finding products that make busy days run more smoothly. I write with everyday life in mind, not perfection.

Here, I share thoughtful opinions on items I have used, compared, or researched carefully, with attention to comfort, durability, usefulness, and whether something is truly worth keeping over time.