Best Hot Tub Sanitizer

There is nothing quite like the relaxing feeling of sitting in a hot tub, is there?

The bubbling heat, the jets hitting all the right places, maybe the cheeky glass of bubbly in hand, it is relaxation at its best. 

What is not relaxing is the cleaning that goes with a hot tub. Because no matter how hard you try, that algae won’t budge? Or the cloudy water won’t clear?

We’ve all been there, and it is not a good feeling. 

That’s where hot tub sanitizers come in to save the day. They can help to regulate the bacteria in your hot tub, banish algae, and leave you to enjoy your hot tub in peace. 

Finding the best hot tub sanitizer can be a challenge, though, can’t it? There are so many on the market, making it hard to know which is the best sanitizer! 

Thankfully, the hard work has been done for you! So sit back, relax and let us bring you the best hot tub sanitizers! 

In a rush? Check out our top pick to grab your sanitizer and get cleaning! 

OUR TOP PICK

U.S. Pool Supply Floating Spa, Hot Tub & Small Pool Chlorine and Bromine Chemical Dispenser - Holds 1' Tablets, 13 Flow Level Control Settings - Worry-Free Balanced Chemical Delivery Water Sanitizer

This chemical dispenser from the U.S. Pool Supply should be at the top of everyone’s shopping lists at an affordable price! 

The professional-grade heavy-duty floating chemical dispenser comes with a tie string and holds 1-inch chlorine or bromine tablets to clean your hot tub all year round. 

With its flat top design, the dispenser can lay flat under solar covers, and its weighted screw prevents it from getting caught in any filters, so there will be no disasters with this device! 

The dispenser comes with 13 adjustable settings to control the flow, so you don’t need to worry about the chemical delivery.

The settings mean you can personalize the dispenser to your hot tub and your needs. 

What is excellent about this dispenser is that you can set it up and forget about it. Simply fill the dispenser, set it and forget about it.

It will dispense the cleaner as you dictate, allowing you to leave it for months, handy for those cold winter months! 

U.S. Pool Supply offers a 12-month warranty with this dispenser and a full refund or replacement within that time if you are unhappy so that you can buy with ease! 

You will need to purchase tablets separately to use this dispenser, and they must be 1-inch tabs, but considering the low price of the dispenser, it is fantastic value for anyone looking to clean their hot tub! 

Pros: 

  • Super affordable 
  • Suitable for hot tubs, pools, and spas 
  • 13 flow control settings 
  • 12-month warranty 
  • It can last for months without needing to adjust. 

Cons:

  • Need to purchase tablets, only works with 1-inch tabs. 

EDITORS CHOICE

iONRx Hot Tub Treatment - Eliminate Chemical Smells - Great for Sensitive Skin - No Rashes - Add Ultra Low Chlorine to Sanitize - Bromine and Enzyme Alternative

iONRx offers a natural hot tub treatment as an alternative to Bromine and other enzyme treatments at an affordable cost. 

The natural cleaner has had success for over ten years at a commercial level and is now available for home use.

The treatment is non-corrosive, and using their patented two-stage solution; you can enjoy a clean and safe hot tub experience! 

Using a natural cleaner will avoid the chemical smell or skin issues such as rashes or tight feeling skin. 

iONRx offers easy maintenance with this treatment, giving you more time to enjoy your hot tub experience.

Simply add 4oz of mixture for every 100 gallons of water once a week and enjoy!

It is recommended that you do this with tap water levels of chlorine to deliver that ultra-clean hot tub with no need to shower after using it! 

The solution works with any hot tub or spa, including inflatable ones!

It is recommended that you have used bromine or enzymes to drain and refill the hot tub, as this solution will not work with bromine in the water. 

Customers were impressed with how well this works to keep the hot tub clean and sanitized without a chemical smell, a great option for all to consider! 

Pros: 

  • Affordable 

  • Natural to eliminate rashes and other issues 

  • Weekly treatment 

  • Easy to maintain 

  • Used with ultra-low levels of chlorine 

Cons: 

  • Not suitable with bromine, you will need to drain and refill your hot tub to use this. 

BEST VALUE

[5 lbs] Bromine Tablets for Hot Tubs & Spas Brominating Tabs

Brought to you by Spa Depot is this impressive 5lb bucket of bromine tablets great for sanitizing your hot tub or spa!

The bucket is decently priced, offering one ¼ inch bromine tabs that depending on how you use it, can last a long time!

Make sure you are using the correct dispenser to get the most use from these tablets.

What is excellent about these tablets is they boast 98% more active ingredients than competing brands to deliver that clean feel to your hot tub, without a strong chemical smell other hot tub sanitizers offer.

The bucket is made with an easy access lid that is also child-resistant, so you don’t need to worry about any tiny fingers getting in here for a TikTok challenge disaster!

The tabs will stay fresh for months even after you have opened the lid, so you really can get your money’s worth with these tabs!

Customers praised this bucket’s excellent value and how well it worked at delivering a clean hot tub!

A good option for those after a large bulk purchase of sanitizer!

Pros: 

  • Decently priced 

  • No strong odor 

  • Easy-access child-resistant lid 

  • Remains fresh for longer 

  • 98% active material

Cons:

  • Some customers found the tabs ran out quite quickly. 

RUNNER UP

4) New NATURE 2 Zodiac W20750 Spa/Hut Tub Mineral Sanitizer Cartridge Sticks

Zodiac offers an eco-friendly way to clean your hot tub with these cartridge sticks.

Available in a 2 or 4 pack, those with a larger budget will enjoy how the silver ions destroy the bacteria and algae in your hot tub. 

Using Nature2 SPA technology to ensure clean water in your hot tub, this is a low maintenance way to clean your hot tub without using harsh chemicals such as bromine. 

The sticks are incredibly easy to use and can keep up to 1,000-gallon capacity clean working with all flow rates in a spa.

Depending on the size, it can be cleaned within 4 hours; some fast action cleaning there! 

Zodiac’s sticks are also easy to maintain, lasting up to 4 months, so you can drop them in and carry on with your life safely in the knowledge your hot tub or spa is squeaky clean!  

The sticks are ideal for non-chlorine systems but will work well alongside bromine and chlorine if you want to incorporate chemicals to clean the hot tub. 

A pricier option, but for those with the budget, it's a great way to keep your hot tub clean and use fewer chemicals! 

Pros: 

  • Available in a 2 or 4 pack 

  • An eco-friendly way to sanitize your hot tub

  • No harsh chemicals 

  • EPA-recognized sanitation

  • Works with cense or chlorine 

Cons: 

  • Expensive 

RUNNER UP

Jacuzzi ProClear Mineral Spa Sanitizer, 2890-185

For those with a Jacuzzi hot tub, this mineral cleaner could be the one for you!

Designed to work with your existing filtration system, simply drop the sanitizer into the filter and let it get to work. 

The filter uses its controlled release technology to maintain optimal mineral levels without you needing to worry about it!

The trace elements of silver work to make your hot tub bacteria-free. 

The sanitizer is incredibly easy to use and maintain, with the cartridge lasting four months to provide hassle-free maintenance for you. 

It is worth noting that this sanitizer only works with select models: Jacuzzi’s J-500, J-400, J-300, and LX Collection Hot Tubs, which come with a removable cap on the top of the filter.

If you have one of these models and are after an easy to use sanitizer, this could be the one for you! 

Pros: 

  • Works with your existing filtration system 

  • Easy to maintain 

  • Uses controlled release technology to maintain mineral levels 

  • User-friendly design 

  • Cleaner and softer water

Cons: 

  • Not compatible with all hot tub models

Best Hot Tub Sanitizer Buying Guide

Let’s look at some factors to consider when purchasing your hot tub sanitizer! 

Types

There are many sanitizers on the market, as we have seen, and it can feel a little overwhelming deciding on one.

We have included a broader classification of them to help you make that decision: 

Chlorine

Not just for swimming pools, chlorine is a great sanitizer to use for your hot tubs!

It can be a powerful sanitizer and is often teamed with mineral sanitizers to prevent cloudy water in your hot tub. 

It is not available in tablet form, and we would not recommend it as a stand-alone sanitizer, although it does work well as an excellent shock for hot tubs. A good option if you require a deep clean! 

Bromine

Another widely used sanitizer is bromine, which works to ensure continuous sanitation.

To use this sanitizer, you insert bromine into the floating bromine feeder. It is available in tablet form. 

Bromide can cause irritated skin and a chemical odor, which are its downside, but a good choice for those after a continuously clean hot tub. 

Mineral sanitizers 

Mineral sanitizers are made using silver or copper ions to provide an eco-friendly way to clean your hot tub. David Attenborough would be proud of this choice! 

Mineral sanitizers are odorless and natural and come with almost no side effects, unlike their competitor’s chlorine and bromide. 

You can get various mineral sanitizers on the market that use a combination of minerals and chemicals such as bromine or chlorine to deliver exceptional sanitization to your hot tub. 

Sticks or tablets? 

When searching for your sanitizer, you may have noticed that they tend to come in tablet or cartridge stick form.

You can also get sanitizer in liquid form, which can be poured into dispensers or filters. 

Tablets will dissolve and release chemicals into the water to clean it.

They can be placed in a dispenser, like our top pick, and you can control the tablet’s release to tailor your sanitizing experience. 

Tabs can run out quickly depending on the brand you purchase and can often need a bit more supervision to get the release levels correct for your hot tub. 

Cartridge sticks are incredibly easy to use; you simply place the stick in the hot tub, some pop straight in your current filtration system, and leave them there!

They can last for up to 4 months, meaning an effortless maintenance job for you! 

They can be an expensive option depending on the brand, and the plastic casing can be wasteful to throw out after each use. 

These aren’t the only options but are some of the most popular uses.

For an easy-to-use and hassle-free experience, we would recommend cartridge sticks, although tablets can also be easy to use once you have the right ones and work out the release settings for your hot tub! 

How much? 

When it comes to hot tub sanitizer, the prices can vary quite drastically. It’s essential to set a clear budget before you begin your search and stick to it as much as possible. 

It is worth considering what is important to you to set your budget to ensure you get what you need from your hot tub sanitizer.

Remember that you don’t need to break the bank to get a good quality hot tub sanitizer for that clean and bubbly happiness.

Frequently Asked Questions

Is it ok to use bleach in a hot tub?

We would not advise using bleach in a hot tub, mainly due to your skin’s reaction when it comes into contact with bleach.

It is better to opt for a cleaner designed specifically for hot tubs, as this will consider contact with bare skin. 

Is chlorine or bromine better for hot tubs? 

This is a personal choice that, ultimately, only you can make. If you have sensitive skin, it is better to avoid bromine as it is known to cause skin irritations and rashes. 

Chlorine is a good choice, but we would recommend adding it with a mineral sanitizer rather than on its own to deliver an excellent clean that won’t be harsh.

The process may be trial and error to find the best sanitizer for yourself, but if you are struggling with sensitive skin, bromine would be one to avoid, in our opinion.