FROG® @ease® for Bullfrog® Spas

Hot Tub Sanitizer Custom Designed for Bullfrog® Spas

Average Rating: 3 67 Reviews

Making life easier for Bullfrog Spa owners is the goal of this FROG @ease System that conveniently fits between the filter cartridges in most Bullfrog Spas. Cleaner, Clearer and Softer® water is just down the road at your local Bullfrog Spas dealer.  With FROG Minerals and SmartChlor® Technology, you’ll enjoy Fresh Mineral Water®∞ that kills bacteria 2 ways with up to 75%* less chlorine and a lot less work!

Pool Foreground Hot Tub Foreground
@ease 75 Percent Less

Up to 75%* less chlorine with no frustrating yo-yo chlorine levels

Shock Once

Shock only once a month

Self Regulates

Self-regulates for continuous crystal clear water

@ease Easy On

Easy on hot tub surfaces with less odors

@ease Color Match

Single color match for easy reading – exclusively with FROG @ease Test Strips

No Constant Monitoring

No constant monitoring

@ease No Mixing

No mixing chemicals

Money Back Guarantee

Money back guarantee


Another FROG @ease benefit – no cyanuric acid that can lead to problems.

Bullfrog Filter
Bullfrog Filter

Additional Information

The @ease System combines the proven FROG mineral formula for killing bacteria with SmartChlor Technology that maintains a consistently low chlorine level for weeks.

Unlike normal chlorine that is used up when you get in, SmartChlor continues to maintain the same level, which is up to 75%* less than hot tubs using dichlor (standard hot tub chlorine). That’s why we call it self-regulating.  It goes to work when the hot tub needs sanitizing so there are no frustrating yo-yo chlorine levels.  This time-released method is also why less shock is needed to maintain the hot tub.

This technology is so unique it has its own testing method that’s easier than standard test strips.

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In 2 seconds, you can know precisely whether your pH, Total Alkalinity and Hardness are balanced, plus whether or not SmartChlor® needs replacing. Simply dip the FROG @ease Test Strip into the water, remove with the pads facing up and shake once to remove the water on the FROG Test Strips. Then hold it up next to the color chart on the back of the bottle to compare colors.

If the SmartChlor color on the strip is darker than the bottle label, the water is fine. If it is lighter it’s time to replace the Smartchlor Cartridge.

This technology is so unique it has its own testing method that’s easier than standard test strips.

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A new standard for keeping your Hot Tub water crystal clear- continuously.

Less Chlorine

Up to 75%* less chlorine with no frustrating yo-yo chlorine levels.

Less Shocking

Only shock once a month!

Self Regulates

Self-regulates for continuous crystal clear water.

Less Odors

Easy on hot tub surfaces with less odors.

  • Unique form of chlorine that works only with FROG minerals
  • It’s EPA registered
  • Unlike dichlor it’s slow dissolving
  • It’s self-regulating by automatically delivering more free chlorine when needed
  • It maintains a consistent 0.5 – 1.0 ppm free chlorine level at all times

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We hope you’re enjoying your Bullfrog Spas® hot tub! Bullfrog Spas® come with FROG @ease sanitizing systems. Did you know that Bullfrog Spas® and FROG are two different companies? FROG has a long and strong relationship with Bullfrog Spas®.

Bullfrog Spas® is the expert at making hot tubs.

FROG is the expert at sanitizing systems for hot tubs.

For all hot tub-related questions, you’ll want to contact your dealer or Bullfrog Spas®. They know all about the hot tub itself.

For questions about sanitizing your water – that’s FROG. Contact FROG anytime Monday through Friday between 8 a.m. – 5 p.m. CDT. Or email us at We’d love to hear from you, and we’re here to answer your questions. We want to make sure you have accurate information; we can give you tips –  we want you to enjoy your Bullfrog Spas® hot tub.

Bullfrog Spas® makes spas.

FROG puts in the “ahhs…”

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  • The FROG @ease Test Strip Out Indicator on the back of the Test Strip Bottle indicates if the SmartChlor cartridge is empty:
  • When the test strip color is lighter than the single-color image on the bottle, it’s time to replace the SmartChlor Cartridge.
  • If you think the SmartChlor cartridge may be empty, remove it from the system, drain all the water and shake the cartridge. If you don’t hear any ingredients inside, it’s empty – it’s time to replace it. If not, put it back in and test the water again in a few days

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Set the FROG @ease SmartChlor Cartridge to the setting that matches your hot tub model number.

The dial is on the bottom of the silver SmartChlor cartridge, twist it up or down.

Once set, the SmartChlor Cartridge will maintain a low 0.5 to1.0 ppm chlorine level as long as the pH stays within 7.2 and 7.8.

When to adjust:

Because SmartChlor self-regulates at a low 0.5 to 1.0 ppm turning up the dial will only result in building up the reserve faster. Therefore, it is rare that you would need to increase the setting.

If you feel the SmartChlor cartridge is dispensing too quickly:

  • Try lowering the setting number by one
  • Decrease your hot tub’s circulation time
  • Free chlorine will always remain at 0.5 to 1.0 ppm, by decreasing the dial you are slowing the buildup of the reserve

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The most common chlorine used in hot tubs



A unique form of chlorine that works only with FROG minerals


Dissolves quickly Dissolves slowly even in hot water
Used up immediately as contaminants enter the water and has no reserve Creates a reserve of chlorine that converts to free chlorine when contaminants enter the hot tub
Free chlorine level drops significantly under demand, more dichlor must be added to keep up with the demand – it’s a yo-yo effect Self-regulates; it maintains a consistent 0.5 to 1.0 free chlorine level in the hot tub for the life the cartridge
Must maintain industry standards of 2 – 4 ppm Reduces overall chlorine use up to 75%* by only needing 0.5 – 1 ppm
Contains up to 50% Cyanuric Acid, which leads to a quick build up resulting in itchy, cloudy water with shorter life. You must drain and refill more often. Contains zero Cyanuric Acid – no build up possible; the water lasts longer
Strong odors occur when dichlor combines with contaminants in the water. Requires a shock treatment. SmartChlor is self-shocking for the life of the cartridge. We recommend that you shock right before putting a new cartridge in which is about once a month. Therefore, when the SmartChlor level is declining as the old cartridge is used up you get rid of any contaminants with a shock and start, and then with a new cartridge. The result is no unpleasant odors at any time.

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The amount of time a SmartChlor Cartridge will last is based on 3 things:

  1. The SmartChlor Cartridge dial setting, which is based on the number of gallons a hot tub holds:
  • The SmartChlor Cartridge is one size.
  • Whatever sanitizer you use, you’ll need more to sanitize more water, and less to sanitize less water.
  • Larger hot tubs require a higher SmartChlor Cartridge dial setting, which allows the SmartChlor to dissolve faster to sanitize larger hot tubs.
  1. The number of people who use the hot tub:
  • The more a hot tub is used, the more sanitization is needed.
  • If your hot tub is used frequently, you may need to turn the SmartChlor Cartridge dial up to sanitize your hot tub.  This will cause the SmartChlor Cartridge to run out faster.
  1. Filtration of water per day:
  • The more often the water is circulated the faster the SmartChlor dissolves.
  • If your hot tub has frequent filtration, you may want to turn down the SmartChlor Cartridge dial to slow down how fast the SmartChlor dissolves.

What is the average life for a SmartChlor Cartridge?

  • The recommended dial setting for the SmartChlor Cartridge is based on gallons and assumes 2 people using the hot tub 2-3 times per week, with a filtration of about 4 hours per day.
  • For a 400-gallon hot tub under those conditions, the SmartChlor Cartridge should last about 3-4 weeks.  Larger hot tubs, more frequent use, more people using the hot tub or more filtration time require a higher dial setting and will use up the SmartChlor Cartridge faster.

How can I get the longest life possible from my SmartChlor Cartridge?

  • The following guidelines should help lessen the demand on the SmartChlor and help it last longer:
    • Always keep your hot tub water balanced. Click here for our easy water balance guide
    • Always shower before using the hot tub
    • Only rinse swimsuits, don’t use detergent – if you do, rinse extra thoroughly
    • Keep hair out of the water
    • Keep contaminants, from food to beverages, leaves or debris out of the hot tub
    • If the hot tub is used more often, shock more often with a non-chlorine shock like FROG Maintain
  • If you use your hot tub less frequently or follow these guidelines, you may be able to turn the SmartChlor Cartridge dial setting down but REGULARLY check the SmartChlor Out Indicator on the FROG® @ease® Test Strips to ensure you have enough SmartChlor in the water to sanitize the water properly.

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Bromine users: Drain, clean and refill the hot tub before using FROG @ease.

Dichlor users: Test your hot tub water to determine the Cyanuric Acid level:

  • If it’s below 20 ppm, you can convert immediately to FROG @ease
  • If it’s higher, you’ll need to drain, clean and refill the hot tub.

Now, Let’s Get Started!

Watch this video get started:

Or Follow these directions:

    1. Test the hot tub water with FROG @ease Test Strips and balance your Total Alkalinity, pH and Total Hardness (for help, see our water balance guidelines)
    2. Add FROG Jump Start® for a start-up shock
    3. Set the dial on the FROG @ease blue Mineral Cartridge to #4 (the dial is on the bottom of the cartridge)
    4. Set the FROG @ease silver SmartChlor Cartridge per the chart: (the dial is on the bottom of the cartridge)

    1. Place the cartridges in the holder and insert the cartridge holder between the filter cartridges, pushing down until it stays in place
    2. When the SmartChlor Cartridge is empty, replace it
    3. After 4 months of using the Mineral Cartridge, replace the entire FROG @ease System that includes a FROG @ease Mineral Cartridge
    4. Shock hot tub using FROG Maintain™

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  • A hot tub using FROG @ease does not test the same way as a hot tub using dichlor
  • FROG @ease uses a unique chlorine, SmartChlor Technology, plus minerals to maintain a consistent low chlorine level and keep your hot tub water Cleaner, Clearer and Softer
  • FROG @ease Test Strips were designed especially with an Out Indicator, a one-color match that designates when the SmartChlor Cartridge is empty. They also measure Total Alkalinity, pH, and Total Hardness levels for proper water balance
  • When the FROG @ease Test Strip is lighter than the Out Indicator color block, located on the test strip bottle, it’s time to replace the SmartChlor Cartridge
  • FROG Test Strips do not measure Free Chlorine
  • Why? Since the Free Chlorine remains consistently at 0.5–1.0 ppm there is no need to test for it
  • SmartChlor creates a reserve that converts to Free Chlorine when it senses the demand, it’s self-regulating. The reserve will start high and slowly deplete over the life of the cartridge as it converts to Free Chlorine when needed – no action required
  • With standard chlorine, like dichlor, you must maintain a Free Chlorine level of 2.0 – 4.0 pm, much higher than FROG @ease, and you need to shock when the Total Chlorine level is higher than the Free Chlorine.
  • With SmartChlor, Total Chlorine will always be higher than Free Chlorine until the Cartridge is empty. Total chlorine is represented by the SmartChlor reserve that is slowly used up over the life of the cartridge

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FROG®’s goal was and is to make water care easier for hot tub owners. Because sanitizers contain hazardous chemicals, FROG set out to create products with no measuring, no guessing and no accidental spilling.

Prefilled cartridges make replacing chemicals easy and convenient for hot tub owners, with no need to store opened containers.

FROG products are regulated by the EPA and DOT. This means FROG must meet the required standards for shipping and storage.

Currently, FROG is actively investigating how to help mitigate the plastics issue while continuing to provide all the benefits, that include not ever needing to touch, measure or store opened containers of chemicals.

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The blue Mineral Cartridge last for 4 months. After that, most people choose to drain and refill their hot tub. Therefore, we packaged the new mineral cartridge with everything you need to start up a freshly filled hot tub.

When you refill your hot tub, you’ll need to balance your hot tub water with FROG @ease Test Strips and adjust as they indicate. Then add FROG Jump-Start to shock the water and insert your new Mineral Cartridge with a SmartChlor Cartridge in your holder custom designed for Bullfrog Spas®.

The SmartChlor and Mineral Cartridges work together. The SmartChlor self-regulates with a low level of chlorine on demand.  It needs to be replaced when depleted – the “Out Indicator” on the FROG @ease Test Strips indicates this.

The Mineral Cartridge lasts for 4 months, and then the minerals are spent (even if you feel or hear them inside.)

Our goal was to make hot tub water care easier, that’s why all the products are included in one System box. You can be assured that you’ll have what you need when you refill your hot tub.

In between, you can purchase the 3-pack of SmartChlor Cartridges.

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* Compared to the minimum ANSI recommended bromine or chlorine level of 2.0 ppm for a hot tub.

∞ For pools and hot tubs.

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Thank you to all who posted reviews. Our team investigated and discovered that a small percentage of Bullfrog Spas® SmartChlor® Cartridges were underfilled. We’ve worked hard to find and remove them, however, a small number were shipped and sold. We’re sorry. If you believe you may have received some of these cartridges, we want to hear from you. Please call us at 800-222-0169 or email us at

See Our Customer Reviews

  1. D Sun

    Rating: 5

    I’m a First time hot tub owner and think this is a great concept especially if it helps lessen the maintenance of owning a hot tub. My question is whether it is essential to use the “jump-start” every month to shock the water?

    • Tom Sager

      Hi D Sun,

      Thank you for your question. Jump Start is designed as a start-up shock for a freshly filled hot tub – it sets the initial chlorine level in your tub.

      FROG Maintain, our latest product, should be used once a month as a maintenance shock – it is non-chlorinated. We recommend it for use with all of our FROG hot tub products.

      If you have any additional questions, feel free to contact our customer service team at 800-222-0169.


  2. Huckle

    Rating: 5

    I’ve owned multiple hot tubs and live in the Northeast with very cold winters. Low maintenance is important when changing water is difficult in freezing weather. Anyway, I haven’t had any leaks with my Bullfrog tub, the @ease system is working for me exactly as advertised, and it has been the best tub I’ve owned. I stumbled on this page and am surprised at all the negative reviews. When reading them closely, I believe some people haven’t really read the information Bulldog supplies. For example, one review said the manual indicates the chlorine pack is super to last 4 months. The instructions and label all say 3-4 weeks, and it is the mineral pack should last around 4 months. They gave the correct ratio of chlorine packs (4), mineral pack (1) to last the full 4- month cycle. At which time, a new pack is started…. With that being said, I’m sure some of the reviews are justified, but definitely not all of them. Also, how often you use your tub, if you shower 1st, etc. will affect water quality and the chemicals needed to keep it clean and safe…

    • Tom Sager

      Thanks for your review Huckle. It will help others and we appreciate it!

  3. Luke Minton

    Rating: 1

    Hello I got a smart kit with my new bullfrog, one of the cartridges had lost a lot of it chrolin can I get that replaced? Thanks

    • Tom Sager

      Hi Luke-

      Thank you for reaching out. Product inconsistencies are concerning and we would like to get to the bottom of it with you. Could you please contact Dan, our customer service lead, at or even better, call him at 800-222-1069. He will be happy to gather additional details and investigate this further.

  4. Ferlin James

    Rating: 1

    I agree with the reviews written. I was misled on this water care system as well. Ridiculous way of taking care of the water. After 4 visits by the dealer finally got all the leaks fixed. Why can’t I buy the mineral treatment in the “blue @easy” container separate from a starter kit?I’ve found the gray container 3 to a box, but not the easy container!

    • Tom Sager


      Thanks for reading the reviews and writing one. We’re sorry you’ve experienced difficulties with leaks in your Bullfrog spa. The FROG brand of water sanitizing products includes a system designed especially for Bullfrog Spas. Typically, people drain and refill their spas every 4 months. The FROG @ease Mineral Cartridge needs to be replaced every 4 months, and we package it in the System box so you’ll have everything you need when you drain and refill your spa. If you have any more questions about FROG @ease sanitizing system, please contact us, we’d love to help!

  5. Kathy Reents

    Rating: 2

    After reading the reviews on line, I have to agree. The maintenance of the Bull Frog spas is very misleading. The cartridges last far less than what we were told or what the manual says. We just had our hot tub installed the middle of March and we already replaced the Smart Chlor filter which was supposed to last 3-4 months and the mineral cartridge needs to be replaced and everything we were told and read in our maintenance manual says 6 months. This is clearly false marketing and advertising. Now I’m trying to find replacement mineral cartridges and it is impossible to find them. There is no way to refill them. What options do we have to keep the chemicals balanced? I assume we can just add chemicals the old fashioned way like one of the other customers said he was going to do. All in all, this is a very high maintenance system. Depending on the warranty, we may have them come and remove it and replace it with some other hot tub.

    • Tom Sager

      Hi Kathy,
      Thanks for writing a review – it’s important for us to know what you’re experiencing. Congrats on getting a Bullfrog hot tub, by the way. After reading your review, we know that there is a significant misunderstanding with the expectant life of the SmartChlor cartridge and the mineral cartridge; somehow, the information you have is not correct and we are very sorry this is causing you trouble. We would LOVE the opportunity to talk with you and resolve this. Please either email or call Dan Mosier at or 800-222-0169 he will explain how this works, what to expect and give you tips on on using these cartridges. He’s our expert and has helped other customers with their FROG @ease for Bullfrog Spas. He’s looking forward to hearing from you.

  6. Dale Kinney

    This cartridge system is obviously a money making gimmick. The have zero affect on the chlorine mineral chemicals. I refused to replace them. Just add chemicals the old fashion way.

    • Wayni Tao

      Hello Dale, Sorry to hear about your concerns. We’d like to talk to you about them. Our head of customer service, Dan Mosier can address the benefits with you and answer your questions – he would love to hear from you. Please call him at 800-222-0169 or feel free to email him at

  7. Joe DeGregori

    Rating: 1

    This @ease system does not work and is very high maintenance. I test weekly and have to add chlorine and PH a few times a week. Based on gallons of water, the setting of the cartridge should be at 3, our is always at four and it is always lighter than the test strip bottle. Something is wrong with your process!

    • Wayni Tao

      Hi Joe, Thank you for your comments! We’d like to help you with your concerns with @ease. Dan Mosier is our head of customer service, and he can answer your questions. Please call him at 800-222-0169 or feel free to email him at Thank you!

  8. Jared Bell

    Rating: 3

    The Frog @ease system seems like it could be awesome and low maintenance, but is very misleading. It says that a chlorine cartridge should last 3-4 weeks. My Bullfrog spa will go through a chlorine cartridge from full to completely empty in 12 days. 12 DAYS!!! Not even close to lasting a month. And I still have to put chlorine is after every use. And Bullfrog is telling me I have to shock it every week. And the test strips are horrible. Half the time I feel like the color matches one reading and my wife feels like it matches a different reading. Seems like there has to be an easier and more accurate way to measure the PH etc. The cost and work to maintain my spa is easily double what I was told it would be. Had I known what I know now, I probably wouldn’t have gotten a Bullfrog Spa with the frog ease system.

    • Wayni Tao

      Hello Jared, thanks for your review. We’d like to talk to you about how to get the cartridge to last longer and the issues you have with our test strips. Could you please take a minute and call Dan at 800-222-0169? Or you can email him at He has tons of experience with hot tubs and can help you resolve your concerns.

  9. Danielle B

    Rating: 1

    This @ease system does not work and is very high maintenance. I test weekly and have to add chlorine every time. Based on gallons of water, the setting of the cartridge should be at 3, our is always at four and it is always lighter than the test strip bottle. We didn’t use the hot tub one time the last four months and I continued to test and add chlorine weekly. Something is clearly not working with this system.

    • Wayni Tao

      Hello Danielle, Thank you for posting a review and we’re sorry to hear that your experience was not up to standards. We would like the opportunity to talk and investigate your feedback further. If you can email Dan Mosier, he would like to get some details from you so he can help. Thank you!

  10. David Peal

    Rating: 1

    Incredibly disappointed. I bought my friends home, and their existing Bullfrog Spa in January. I contacted the local Bullfrog Spa dealer about care and chemicals. They directed me to this filter kit and cartridges. Well I’ll be a monkey’s uncle. I can’t get replacement cartridges from the dealer now. They’ve had them on order for a while. I follow the advice of all the other review comments above and reach out to Dan Mosier. Of course the voicemail box for customer service is full, and won’t accept more messages. This filter mount and kit has to be one of the worst investments I’ve made in a while. Will be sharing my displeasure with this company far and wide.

    • Wayni Tao

      Hi David, We’ve discovered a technical issue with our phone system. We’re very sorry this impacted you, but please know we are working on this now and will resolve it soon. We are sorry to hear that you have a hard time getting replacement cartridges for your hot tub. Please email Dan Mosier and he would be more than happy to help you!

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