Best Pool Chlorine for Hot Tubs of 2025

Bryan Hicks Avatar
Bryan Hicks
Last Updated: Jan 3, 2025

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Pool chlorine is a highly effective chemical used to sanitize hot tubs and pools, killing harmful bacteria and preventing the growth of algae. It is available in various forms, including granular, liquid, and tablet. Granular chlorine dissolves quickly in water and is ideal for shock treatments. Liquid chlorine is easy to use and can be added directly to the hot tub water. Chlorine tablets are a convenient option, slowly dissolving over time and requiring less maintenance. It is important to regularly monitor the chlorine levels in the hot tub to ensure it is properly sanitized and safe to use.

At a Glance: Our Top Picks

HTH Spa 86134 Clear Chlorinating Sanitizer Cover #TOP 1
HTH Spa 86134 Clear Chlorinating Sanitizer
ftb score rating icon 9.8
Leisure Time 22337A Spa 56 Chlorinating Granules Cover #TOP 2
Leisure Time 22337A Spa 56 Chlorinating Granules
ftb score rating icon 9.7
HTH Spa Non-Chlorine Shock Oxidizer 86135 Cover #TOP 3
HTH Spa Non-Chlorine Shock Oxidizer 86135
ftb score rating icon 9.5

Top 10 Pool Chlorine for Hot Tubs

#TOP 1

HTH Spa 86134 Clear Chlorinating Sanitizer

HTH
86134
No Size
HTH Spa 86134 Clear Chlorinating Sanitizer Cover
HTH Spa 86134 Clear Chlorinating Sanitizer, Spa & Hot Tub Chemical Controls Bacteria and Algae, 2.25 lbs

Rely on HTH Spa Chlorinating Sanitizer to control algae, kill bacteria, and destroy contaminants in your spa. This convenient and easy-to-use sanitizer is ideal for sanitizing and shock treating spas and hot tubs. It acts fast and is compatible with chlorine-based spas. By using HTH Spa Chlorinating Sanitizer, you can protect your water against chlorine loss, creating a more comfortable spa experience with no sediment. Incorporate it into your regular HTH Spa care routine for best results.

What We Like
Controls algae
Kills bacteria
Fast acting

Leisure Time 22337A Spa 56 Chlorinating Granules

22337A
Gray
1-Pack
Leisure Time 22337A Spa 56 Chlorinating Granules Cover
LEISURE TIME 22337A Spa 56 Chlorinating Granules for Hot Tubs, 2 lbs, gray

Leisure Time 22337A Spa 56 Chlorinating Granules is specifically formulated for spa and hot tubs. It quickly dissolves and helps control algae growth while destroying organic contaminants to maintain clean, clear, sanitized water. It is EPA approved and has a pH neutral formula.

What We Like
Specifically formulated for spa and hot tubs
Quickly dissolves
Helps control algae growth
Destroys organic contaminants
EPA approved and pH neutral formula
#TOP 3

HTH Spa Non-Chlorine Shock Oxidizer 86135

HTH
86135
No Size
HTH Spa Non-Chlorine Shock Oxidizer 86135 Cover
HTH Spa 86135 Non Chlorine Shock Oxidizer, Spa & Hot Tub Chemical Clears Cloudy Water, 2.25 lbs

The HTH Non-Chlorine Shock is designed to help you enjoy fresh and clear water in your spa or hot tub. This oxidizer effectively eliminates cloudy water, ensuring a pleasant soak every time. It also reduces unpleasant odors caused by ammonia and chloramines, making your spa experience more enjoyable. Unlike traditional chlorine, this non-chlorine formula is gentle on your skin and eyes, providing a more comfortable environment. Additionally, it works well with both bromine and chlorine systems, making it a versatile choice for your regular spa maintenance routine.

What We Like
Clears cloudy water
Reduces unpleasant odors
Gentle on skin
Compatible with bromine systems

XtremeClear 1" Chlorine Tabs

71110
White
XtremeClear 1" Chlorine Tabs Cover
XtremeClear 1" Chlorine Tabs, Swimming Pool, Hot Tubs & Spa, Small Pool Sanitizer, Long-Lasting Stabilized, Sanitizes - Slow Dissolving, 1.5 lbs

XtremeClear Chlorine Tabs are designed for a variety of water systems, including above-ground pools, hot tubs, and spas. These slow-dissolving tablets last up to a week, providing you with convenient and consistent sanitation. They are compatible with all pool types, including saltwater systems, allowing you to use them easily in floaters or skimmer baskets. Each tab is pre-stabilized, protecting against UV rays to ensure longer-lasting effectiveness. With these tablets, you can save money by reducing the frequency of water changes, making pool maintenance simpler and more efficient.

What We Like
Versatile for multiple uses
Long-lasting chlorine protection
Compatible with all pool types
Cost-effective water savings
#TOP 5

Spa Choice Sanitizing Granules Hot Tub Chlorine

472-3-5081
5-Pounds
Spa Choice Sanitizing Granules Hot Tub Chlorine Cover
SpaChoice 472-3-5081 Spa Chlorine Granules for Hot Tub, 5-Pounds

Spa Choice 472-3-5081 Sanitizing Granules Hot Tub Chlorine 5-Pounds, 1-Pack is a great choice for hot tubs. It dissolves quickly and completely, and is a stabilized spa chlorine with 56% available chlorine. It also controls algae and kills bacteria. Customers have found it to be effective in keeping their hot tubs clean and sanitary, and appreciate the sturdy container and good value for the price.

What We Like
Dissolves quickly and completely
Stabilized spa chlorine with 56% available chlorine
Controls algae and kills bacteria
Sturdy container
Good value for the price
#TOP 6

U.S. Pool Supply Floating Spa Chlorine/Bromine Dispenser

USP CD-250
13-Flow
U.S. Pool Supply Floating Spa Chlorine/Bromine Dispenser Cover
U.S. Pool Supply Floating Spa, Hot Tub & Small Pool Chlorine and Bromine Chemical Dispenser - Holds 1" Tablets, 13 Flow Level Control Setting

The U.S. Pool Supply Floating Spa Chlorine/Bromine Dispenser is a professional grade, heavy-duty weighted chemical dispenser that holds 1" chlorine or bromine tablets. It features 13 adjustable chemical flow control settings, allowing you to set the dispenser for worry-free balanced chemical delivery. The flat top allows it to lay flat under solar covers, and the weighted screw on bottom cap prevents the dispenser from getting caught in the spa or hot tub filter. Buy with confidence, as it comes with a one-year satisfaction guarantee.

What We Like
13 adjustable chemical flow control settings
Flat top allows it to lay flat under solar covers
Weighted screw on bottom cap prevents the dispenser from getting caught in the spa or hot tub filter
One-year satisfaction guarantee
#TOP 7

Merkia Floating Mini Spa Chemical Dispenser

Blue
Small
Merkia Floating Mini Spa Chemical Dispenser Cover
Floating Mini Spa Chemical Dispenser, Chlorine/Bromine Tablet Floater for 1 Inch Tablets, Idea for Spa, Hot Tub &,Fountain, Inflatable & Above-Ground Pools

The Merkia Spa Chemical Dispenser is a perfect solution to keep your pool or spa ready to use. The dispenser floats and can spread chlorine effectively to every corner of your pool, providing you and your family and friends with a more enjoyable swimming/spa experience. Made of durable ABS plastic, the dispenser can hold up to 1" chlorine/bromine tablets and can last for years. It comes with a secure twist-lock cap and an adjustable ring that gives you complete control over the amount of chlorine added to your pool or spa water. The dispenser is easy to use, simply twist the locking cap, fill the chlorine tablets, adjust the desired setting, and throw it into the pool. The Merkia Spa Chemical Dispenser also comes with a satisfaction promise, ensuring that you are 100% satisfied with your purchase or you will receive a full refund.

What We Like
Superior performance
Adjustable flows
Easy to use
#TOP 8

YLYL Hot Tub/Spa/Pool Chlorine Floater

YLYL Hot Tub/Spa/Pool Chlorine Floater Cover
Hot Tub/Spa/Pool Chlorine Floater Chlorinator/Bromine Floater, Chemical Floating Dispenser for Pools, Premium Automatic Tablets Floaters,YLYL

The YLYL Hot Tub/Spa/Pool Chlorine Floater is a great choice for keeping your pool clean and healthy. It is adjustable and automatically releases chlorine or bromine into your pool, and is made from premium durable ABS plastic. It is tall enough to fit in a spa, small pool, above ground pool, or kid water park, and has an easy to remove twist lock lid. Customers have found it to be easy to use and of good quality.

What We Like
Adjustable and automatically releases chlorine/bromine
Made from premium durable ABS plastic
Fits in a spa, small pool, above ground pool, or kid water park
Easy to remove twist lock lid
Good quality
#TOP 9

ATIE Inflatable/Above-Ground Pool Floating Mini 1" Chlorine/Bromine Tablet Dispenser

90733
1 Pack
ATIE Inflatable/Above-Ground Pool Floating Mini 1" Chlorine/Bromine Tablet Dispenser Cover
ATIE Collapsible/Retractable Pool Spa 1" Chlorine/Bromine Tablet Dispenser for Pool, Spa, Hot Tub, and Fountain, Perfect for Inflatable & above-Ground Pools

The ATIE Inflatable/Above-Ground Pool Floating Mini 1" Chlorine/Bromine Tablet Dispenser is a great choice for those looking for a reliable and adjustable chemical dispenser for their pool, spa, hot tub, or fountain. Made of U.V. resistant material, it is 5.25" tall with a 5" diameter and features adjustable bottom vents for proper chemical dispensing and an easy to remove twist lock lid. Customers have found it to be a great choice for their needs, with some noting that it is a bit small for larger pools.

What We Like
Made of U.V. resistant material
Adjustable bottom vents for proper chemical dispensing
Easy to remove twist lock lid
#TOP 10

Rx Clear Stabilized Granular Chlorine 8 lb

204037
8 Lbs
Rx Clear Stabilized Granular Chlorine 8 lb Cover
Rx Clear Stabilized Granular Chlorine | 8 Pound Bucket | Use As Bactericide, Algaecide, & Disinfectant in Swimming Pools and Spas | Fast Dissolving and UV Protected

Rx Clear Granular Chlorine is designed to keep your swimming pool or spa water crystal clear without harsh effects on your skin. This product is primarily made of sodium dichlor, ensuring a gentler swimming experience. Thanks to its UV resistance, it lasts longer than other chlorinating options, helping you maintain clean water with less frequent applications. You can easily treat your pool by adding just one ounce for every 5,000 gallons, and it dissolves quickly, making it convenient for daily maintenance. Plus, being pH neutral means fewer chemical adjustments for you, simplifying your pool care routine.

What We Like
Gentle on skin
Long-lasting effectiveness
Quick dissolving
Fewer chemical adjustments
Buying Guide Image

Guidelines for Choosing the Right Pool Chlorine for Hot Tubs

How to Choose the Right Swimming Pool Chlorine for Hot Tubs

When it comes to taking proper care of a hot tub, one of the most important considerations is the right swimming pool chlorine. Poorly maintained hot tubs can get overrun with bacteria and algae, leading to a host of issues. The right chlorine product can help your hot tub stay healthy and safe, so it’s important to carefully consider the best option for your needs.

What to Look for in Hot Tub Chlorine

The primary function of chlorine in a hot tub is to sanitize and disinfect. It works by breaking down organic and inorganic compounds, killing off bacteria, algae, and other contaminants that can accumulate in the water. Chlorine also helps keep your hot tub clean and clear by breaking down organic compounds that can cause cloudiness.

When shopping for hot tub chlorine, it’s important to consider the form of the product. Chlorine is available as granules, tablets, and liquid. Granules are most commonly used in hot tubs and are available in both stabilized and unstabilized forms. Stabilized chlorine is great for hot tubs because it contains additional ingredients that help protect it from the sun’s ultraviolet rays, allowing it to last longer in the hot tub.

Tablets are another popular form of chlorine for hot tubs. They can be used in floating dispensers, which help maintain a consistent chlorine level. Tablets also come in both stabilized and unstabilized forms. Liquid chlorine, while not as popular as granules and tablets, is also available and can help maintain a steady chlorine level.

Finding the Right Chlorine Level

When adding chlorine to your hot tub, it’s important to maintain the right chlorine level. The ideal level is between 1 and 3 parts per million (ppm). If the chlorine level drops too low, bacteria and other contaminants can start to accumulate. If the chlorine level rises too high, it can irritate your skin, eyes, and nose.

To make sure your hot tub maintains the right chlorine level, it’s important to test the water regularly with a test strip. These strips will give you a reading of the chlorine level and help you determine if you need to add more chlorine. It’s also important to make sure your hot tub is properly filtered to help remove bacteria and other contaminants.

Choosing the Right Chlorine Product

When it comes to choosing the right chlorine product for your hot tub, it’s important to consider the various options. Look for a product that is designed specifically for hot tubs and is stabilized to protect it from the sun’s rays. It’s also important to make sure the product contains enough chlorine to maintain the ideal level of 1 to 3 ppm.

When choosing a product, it’s also important to consider the cost. Depending on the size of your hot tub and the amount of chlorine you need, the cost of chlorine can add up quickly. Look for a product that is cost-effective and easy to use.

Finally, it’s important to make sure the chlorine you choose is safe to use in your hot tub. Read the label carefully to make sure the product is suitable for your hot tub and won’t cause any harm.

Conclusion

Swimming pool chlorine is an important part of keeping your hot tub healthy and safe. To make sure your hot tub maintains the ideal chlorine level, it’s important to choose the right product for your needs. Consider the various forms of chlorine, the right chlorine level, and the cost of the product when choosing the best chlorine for your hot tub. By carefully selecting the right chlorine, you can ensure that your hot tub remains clean and safe for years to come.

Frequently Asked Questions (FAQs)

1. Can you use swimming pool chemicals in a hot tub?

Ultimately, pool and spa chemicals are not the same. In fact, using pool chemicals in your hot tub can cause a lot of damage to both the spa itself and the people who use it. Always read the instructions on the chemical packages and consult with a professional if you have any questions.

2. Is there a difference between chlorine for pools and hot tubs?

If you've casually looked at these chemicals, you might think there's no difference between hot tub chemicals and swimming pool chemicals. However, if you look closer, you'll notice that the swimming pool chemicals come in much higher concentrations than those made for the hot tub.

3. How much liquid chlorine do I put in my hot tub?

How Much Chlorine Should I Add to my hot tub? A chlorine level of between 3-5mg/l must be maintained in your hot tub at all times. The addition of chlorine will depend upon usage and bathing habits. It could be daily or every 2-3 days (for 1mg/l add 2g per 1000 litres).

Editor's Notes

During our pool chlorine for hot tubs research, we found 24 pool chlorine for hot tubs products and shortlisted 10 quality products. We collected and analyzed 117,889 customer reviews through our big data system to write the pool chlorine for hot tubs list. We found that most customers choose pool chlorine for hot tubs with an average price of $14.02.

The pool chlorine for hot tubs are available for purchase. We have researched hundreds of brands and picked the top brands of pool chlorine for hot tubs, including HTH, LEISURE TIME, XtremepowerUS, SpaChoice, U.S. Pool Supply. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Bryan Hicks Avatar

Bryan Hicks is a professional gardener and a writer who lives in North Texas with his family and his dog. Bryan has spent more than half of his life surrounded by garden products. He has extensive experience in garden makeovers and maintenance and lawn care. His areas of expertise include outdoor decoration, gardening and garden design.