Affiliate Disclosure: This post may contain affiliate links. If you purchase through links on our site, we may earn an affiliate commission at no extra cost to you.
There’s nothing more frustrating than stepping into your hot tub, only to find the water cloudy or irritating your skin. You want to relax, but unbalanced water chemistry just ruins the moment.
One common problem is low alkalinity, which can make your hot tub water harsh and cause damage over time. Knowing exactly how much baking soda to add can feel confusing and stressful. The good news is, choosing the right alkalinity increaser makes maintaining your hot tub’s water simple and worry-free.
With the right product, you’ll keep your water balanced, clear, and gentle on your skin. In this article, we’ll guide you through the best options available to raise alkalinity and help you enjoy your hot tub without hassle. Keep reading to find the perfect solution for your spa care needs.
Clorox Pool&spa Swimming Pool Alkalinity Increaser

The Clorox® Pool&Spa™ Swimming Pool Alkalinity Increaser is ideal for pool owners who want to maintain a perfectly balanced pH level in their swimming pools. If you are someone looking to prevent corrosion, scaling, and cloudy water by stabilizing the alkalinity, this product is designed specifically for you. It is especially suitable for those who use their pool frequently and want to ensure a safe and comfortable swimming environment.
Pros:
- Effectively increases and stabilizes total alkalinity to keep pH levels balanced.
- Easy to apply with clear instructions for consistent pool maintenance.
- Packaged in a convenient 5LB size suitable for regular use.
- Manufactured by Clorox Pool&Spa, a trusted brand in pool care products.
- Compact dimensions (10.5″ H x 9.0″ W x 4.4″ L) make storage hassle-free.
Cons:
- Single pack may require multiple purchases for larger pools.
- Only addresses alkalinity; additional chemicals needed for complete water treatment.
- Requires careful measurement to avoid overuse and imbalance.
The Clorox® Pool&Spa™ Alkalinity Increaser is formulated to raise the total alkalinity in your pool water, which plays a crucial role in maintaining a stable pH level. When total alkalinity is too low, the water can become acidic and cause damage to pool surfaces and equipment. This product helps prevent those issues by buffering the water and keeping it balanced, ensuring a longer life for your pool components.
Its easy-to-use granular formula dissolves quickly in water, allowing for efficient application without any hassle. By maintaining proper alkalinity, swimmers benefit from clearer, more comfortable water that is less likely to irritate skin and eyes. Overall, this product provides essential support in your pool maintenance routine, promoting a safe and enjoyable swimming experience all season long.
To buy this product, click here.
Pool Mate Premium Alkalinity Increaser For Swimming Pools

The Pool Mate 10-Pounds Premium Alkalinity Increaser is ideal for pool owners who want to maintain balanced water chemistry with ease. Perfect for those who regularly monitor their swimming pool’s pH levels, this product is especially suitable for individuals looking to prevent corrosion and scaling by boosting total alkalinity using a reliable and safe ingredient.
Pros:
- Contains 100% Sodium Bicarbonate for effective alkalinity increase
- Helps stabilize pH levels and prevent water corrosion
- Easy to apply with clear dosage instructions
- Packaged in a convenient 10-pound container for multiple uses
- Produced by trusted brand Pool Mate and Robelle Industries
Cons:
- Only increases alkalinity, not designed for pH reduction
- Requires regular testing to avoid over-application
- Not suitable for pools with already high alkalinity levels
The Pool Mate Premium Alkalinity Increaser is formulated to raise the total alkalinity in swimming pool water efficiently. By using 100% Sodium Bicarbonate, it ensures a safe and natural method to stabilize pH levels, which is crucial for protecting pool surfaces and equipment from damage caused by acidic water. The product’s dimensions and weight make it easy to store and handle, and it provides ample quantity for ongoing maintenance.
This alkalinity increaser benefits users by helping maintain clear, balanced water that enhances swimmer comfort and prolongs the life of pool components. Regular use prevents fluctuations in water chemistry that can lead to costly repairs or the need for additional chemicals. Overall, the Pool Mate 10-Pounds Premium Alkalinity Increaser is a practical and effective solution for pool owners seeking to keep their swimming pools in optimal condition.
To buy this product, click here.
Aquadoc Spa Alkalinity Increaser For Hot Tub

The AquaDoc Spa Alkalinity Increaser for Hot Tub is ideal for hot tub owners who want to maintain optimal water balance and prevent pH fluctuations. If you are someone who regularly uses a hot tub and wants to ensure a smooth, comfortable, and safe soaking experience, this product is designed for you. It is particularly suited for those who prefer a reliable and easy-to-use solution to keep their spa water chemically balanced.
Pros:
- Effectively increases alkalinity to stabilize hot tub water chemistry
- Prevents pH bounce, ensuring consistent water quality
- Comes in a convenient 32oz size, available in a 2 pack for extended use
- Made in the USA, ensuring high quality and safety standards
- Easy to apply sodium bicarbonate granules dissolve quickly in water
Cons:
- Only suitable for hot tubs, not recommended for other types of pools
- Requires regular monitoring of water balance to maintain effectiveness
- Granules may require careful handling to avoid spillage
The AquaDoc Spa Alkalinity Increaser features sodium bicarbonate granules that are specifically formulated to raise the alkalinity level in your hot tub water. This helps to maintain a balanced water chemistry, which is essential to prevent corrosion, scaling, and skin irritation. By stabilizing the alkalinity, the product also helps to reduce fluctuations in pH levels, commonly known as pH bounce, which can cause discomfort and damage to hot tub components.
The product’s design considers user convenience, as the granules dissolve quickly and evenly, providing fast results without clouding the water. Its packaging in a 32oz bottle, sold as a 2 pack, ensures you have enough supply to maintain your hot tub over time. With dimensions of 6.5 inches in height, 6.77 inches in width, and 12.71 inches in length, and weighing 4.0 pounds, it is easy to store and handle. Overall, the MAV AquaDoc Spa Alkalinity Increaser is a practical and effective solution for hot tub owners looking to preserve their spa’s water quality and extend its lifespan.
To buy this product, click here.
Hot Tub Things Ph Up & Alkalinity Increaser

The Hot Tub Things pH Up & Alkalinity Increaser is ideal for hot tub, pool, and spa owners who want to maintain balanced water chemistry and prevent corrosion. If you are someone seeking an easy-to-use solution to boost your water’s pH and alkalinity levels, ensuring a safe and comfortable bathing experience, this product is perfect for you.
Pros:
- Effectively raises both pH and alkalinity levels to maintain optimal water balance.
- Helps prevent corrosion and damage to hot tub and pool equipment.
- Compact 1-pound container with convenient dimensions (7.0 x 2.0 x 2.0 inches) for easy storage.
- Suitable for use in hot tubs, pools, and spas, providing versatile water treatment.
- Manufactured by Hot Tub Things, a trusted brand in water care products.
Cons:
- Requires careful measurement to avoid overuse and potential water imbalance.
- May need frequent application depending on water conditions and usage.
The Hot Tub Things pH Plus & Alkaline Up works by increasing the pH and alkalinity levels in your water, which are essential for maintaining a stable and healthy environment in your hot tub or pool. Balanced water chemistry not only improves the comfort of the water but also protects the surfaces and equipment from damage caused by acidic or corrosive conditions. This product dissolves easily and quickly distributes throughout the water to deliver consistent results.
Additionally, maintaining proper alkalinity helps to buffer the water, preventing sudden changes in pH levels. This stability reduces the need for frequent adjustments, saving you time and effort while ensuring your spa or pool remains safe and enjoyable. With the trusted quality of Hot Tub Things, this increaser is a reliable choice for anyone looking to enhance water quality and extend the life of their aquatic equipment.
To buy this product, click here.
Hot Tub Things Ph & Alkalinity Down

The Hot Tub Things pH & Alkalinity Down is ideal for hot tub and spa owners who want to maintain clear, balanced water with minimal effort. If you are looking for an easy and effective way to lower alkalinity and pH levels in your spa or pool while protecting your equipment, this product is designed for you. It is perfect for those who prioritize water clarity and want a gentle solution to keep their hot tubs and pools safe and enjoyable.
Pros:
- Effectively lowers pH and alkalinity levels to maintain balanced water chemistry
- Gentle formula that is safe on hot tub and pool equipment
- Easy to use, providing a simple water balance solution for spas and pools
- Compact size with 1.25 lb weight for convenient storage and handling
- Supports clear and clean water for a better bathing experience
Cons:
- May require multiple applications for very high alkalinity levels
- Not a standalone sanitizer, so additional chemicals are needed for full water treatment
The Hot Tub Things pH & Alkalinity Down is formulated to gently and effectively reduce the alkalinity and pH in hot tubs and pools, ensuring water remains balanced and clear. Its precise formulation protects your spa and pool equipment from corrosion or damage that can occur with harsh chemicals. The easy-to-use design simplifies the water maintenance routine, saving you time and effort while improving water quality.
With dimensions of 7.5 inches in height and 2.5 inches in width and length, this compact product is easy to store and handle. The 1.25 lb packaging makes it manageable for regular use, enabling spa and pool owners to maintain optimal water chemistry consistently. By controlling alkalinity and pH, users enjoy a longer lifespan for their equipment and a more comfortable, enjoyable soaking experience.
To buy this product, click here.
In The Swim Alkalinity Increaser For Swimming Pools

The In The Swim Alkalinity Increaser for Swimming Pools is ideal for pool owners who want to maintain balanced water chemistry effortlessly. If you are looking to raise the alkalinity and stabilize the pH levels of your swimming pool, this product is perfect for you. It is especially suitable for those who prioritize clean, clear, and safe pool water to enhance their swimming experience.
Pros:
- Contains 100% pure sodium bicarbonate for effective alkalinity increase
- Helps maintain balanced pH levels to prevent corrosion and scaling
- Easy to apply with precise dosage control
- Comes in a convenient 10-pound package, ideal for multiple treatments
- Trusted brand: In The Swim, manufactured by ALL CHEM INDUSTRIES
Cons:
- Not suitable for lowering alkalinity or pH
- Requires regular monitoring of pool chemistry for best results
This alkalinity increaser is formulated with pure sodium bicarbonate, ensuring that your pool water maintains a healthy chemical balance. Raising alkalinity helps to buffer the water, preventing sudden pH fluctuations that can cause irritation to swimmers and damage to pool equipment. The product’s precise composition allows for safe, gradual adjustment, making it easier for users to maintain optimal water conditions.
Its 10-pound packaging size provides enough product to treat most residential pools, and the compact dimensions (3.9 inches in height, 11.3 inches in width, and 14.5 inches in length) make storage simple and convenient. By using this increaser regularly, pool owners benefit from reduced maintenance issues, clearer water, and a more comfortable swimming environment for family and friends.
To buy this product, click here.
In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up

The In The Swim Solvay Bicar Sodium Bicarbonate Alkalinity Up, 50 lbs. is ideal for pool owners and maintenance professionals who need a reliable solution to increase and stabilize the alkalinity levels in their swimming pools. If you want to maintain crystal-clear water and prevent corrosion or scaling, this product is tailored to help you achieve balanced pool chemistry efficiently.
Pros:
- Effective alkalinity increaser that helps stabilize pH levels
- Large 50 lbs. bag suitable for multiple pool treatments
- Produced by a trusted brand, In The Swim, known for pool care products
- Easy to apply and dissolve in pool water
- Helps prevent corrosion of pool equipment and scaling on surfaces
Cons:
- Heavy 51-pound packaging may be cumbersome for some users to handle
- Not suitable for pools requiring rapid pH decrease or other chemical adjustments
This sodium bicarbonate product from In The Swim is designed with the pool owner’s needs in mind, featuring a substantial 50-pound size that ensures long-lasting use. Its primary function is to raise total alkalinity, which is crucial for maintaining balanced pool water chemistry. By stabilizing alkalinity, it helps prevent sudden pH fluctuations that can cause discomfort for swimmers and damage to pool surfaces and equipment. The dimensions of the packaging (3.0 inches height, 14.6 inches width, and 19.5 inches length) make it compact enough for storage while still offering a large quantity for extended pool care.
The benefit of using this product lies in its ability to promote water clarity and extend the lifespan of pool components by reducing corrosion and scaling. Regular use ensures that pH levels remain steady, which means fewer adjustments and a healthier swimming environment. As a trusted product from In The Swim, it combines reliability with ease of use, making it a smart choice for anyone committed to optimal pool maintenance.
To buy this product, click here.
In The Swim Ph Increaser For Pools

The In The Swim pH Increaser for Pools is ideal for pool owners who want to maintain balanced water chemistry easily and effectively. If you are looking to raise the pH level of your pool safely and quickly, this granular product made of 100% Sodium Carbonate (Soda Ash) is perfect for you. It suits those who prefer a reliable and straightforward solution to prevent corrosion and irritation caused by low pH levels.
Pros:
- Efficient pH adjustment with granular soda ash formula
- Easy to use and quick dissolving
- 10-pound packaging offers good value and enough quantity for multiple treatments
- Trusted brand from In The Swim Discount Pool Supplies
- Multi-colored granules for easy identification
Cons:
- Requires careful handling to avoid over-application
- Granular form may need pre-dissolving in some cases
- Not suitable for pools needing combined alkalinity and pH adjustments
The In The Swim pH Increaser is designed to effectively raise the pH levels in swimming pools, preventing the water from becoming too acidic. This helps protect pool equipment from corrosion and keeps swimmers comfortable by reducing skin and eye irritation. Its granular form ensures fast dissolution and easy distribution throughout the pool water, making maintenance a hassle-free process.
With dimensions of 3.8 inches in height, 11.0 inches in width, and 14.6 inches in length, and weighing 10.1 pounds, this product is conveniently sized for storage and handling. As a trusted product from In The Swim Discount Pool Supplies, it guarantees quality and consistency, helping pool owners maintain crystal clear and balanced water all season long.
To buy this product, click here.
Baking Soda

The It’s Just – Baking Soda is ideal for individuals who prioritize purity and versatility in their kitchen essentials. Perfect for home bakers, health-conscious cooks, and those seeking a reliable, food-grade ingredient for cooking and baking, this product caters to anyone looking for a non-GMO and high-quality sodium bicarbonate made in the USA.
Pros:
- 100% pure sodium bicarbonate ensuring safety and effectiveness in recipes.
- Food grade quality suitable for various culinary and household uses.
- Non-GMO product, appealing to health-conscious consumers.
- Compact packaging with dimensions of 3.0 x 8.0 x 5.0 inches and weight of 1.25 pounds for easy storage.
- Manufactured by 138 Foods in the USA, guaranteeing high manufacturing standards.
Cons:
- Limited size option at 1.25 pounds, which might not suffice for heavy users.
- Packaging design is simple and may not appeal to those preferring premium packaging.
The It’s Just – Baking Soda stands out for its purity and compliance with food-grade standards, making it an excellent choice for baking, cooking, and even cleaning purposes. Its non-GMO certification provides peace of mind for users seeking natural and safe ingredients. The product’s size and weight make it convenient for everyday use without occupying much space in the kitchen.
Additionally, being manufactured in the USA by a reputable company adds to its credibility and quality assurance. Users can expect consistent results when using this baking soda in recipes, whether for leavening baked goods or neutralizing odors. Overall, it is a dependable and versatile product for anyone who values quality and purity in their kitchen staples.
To buy this product, click here.
In The Swim Ph Increaser For Pools

The In The Swim pH Increaser for Pools is ideal for pool owners who need to efficiently raise the pH level of their pool water to maintain a balanced and safe swimming environment. This product is perfect for those who want a reliable and easy-to-use solution to counteract low pH caused by rain, pool usage, or chemical treatments. If you are looking to prevent corrosion, equipment damage, and skin irritation, this granular 100% Sodium Carbonate (Soda Ash) is the right choice.
Pros:
- Highly effective in raising pool pH levels quickly
- Contains 100% pure Sodium Carbonate for consistent results
- Granular form makes it easy to dissolve and apply
- Comes in a convenient 5-pound size for multiple treatments
- Manufactured by In The Swim, a trusted brand in pool care
Cons:
- May require careful measuring to avoid overcorrection
- Not suitable for pools that need pH lowering products
The In The Swim pH Increaser is formulated to deliver reliable performance with its granular Soda Ash composition, ensuring that the product dissolves quickly and disperses evenly throughout the pool water. This helps pool owners maintain optimal water balance, which is critical for protecting pool surfaces and equipment from damage caused by acidic water. The precise control over pH levels also contributes to a more comfortable swimming experience by reducing skin and eye irritation.
With its manageable size and easy application, this product is user-friendly and suitable for both new and experienced pool owners. The multi-colored packaging adds visibility and ease of identification among other pool chemicals. Overall, the In The Swim pH Increaser is a practical and efficient solution for maintaining healthy pool water chemistry, ensuring that your pool remains crystal clear and safe for swimmers throughout the season.
To buy this product, click here.
Frequently Asked Questions
How Much Baking Soda To Raise Hot Tub Alkalinity?
Generally, add 1. 5 pounds of baking soda per 10,000 gallons to raise alkalinity by 10 ppm. For hot tubs, adjust proportionally based on water volume.
Can I Use Pool Alkalinity Increaser In Hot Tubs?
Yes, pool alkalinity increasers with sodium bicarbonate are safe for hot tubs. Follow dosage instructions carefully to avoid over-alkalinity.
How Often Should I Add Alkalinity Increaser To My Hot Tub?
Test alkalinity weekly and add increaser as needed. Regular maintenance keeps water balanced and prevents pH swings.
What Is The Difference Between Ph Increaser And Alkalinity Increaser?
Alkalinity increaser stabilizes pH levels, preventing rapid changes. PH increaser directly raises the water’s pH value. Both are important for water balance.
Is Baking Soda Better Than Commercial Alkalinity Increasers?
Baking soda (sodium bicarbonate) is effective and affordable. Commercial products may contain additives, but both raise alkalinity safely when used properly.
Conclusion
Raising alkalinity in your hot tub with baking soda is simple and effective. Use the right amount based on your tub’s size and current alkalinity level. Start by testing the water to know how much to add. Most products, like Clorox® Pool&Spa™ or AquaDoc Spa Increaser, provide clear instructions for dosage.
Adding too much can cause pH imbalances, so measure carefully. Regular testing and adjustment keep water safe and comfortable. Balanced alkalinity helps prevent corrosion and protects your hot tub equipment. It also keeps water clear and comfortable for swimmers. Choose a trusted sodium bicarbonate product made for pools or spas for best results.
Following these tips ensures your hot tub stays clean and well-balanced. Enjoy relaxing in water that feels fresh and safe every time. Simple steps and the right products make alkalinity control easy and hassle-free.







