FROG® @ease® In-Line System

The built-in Hot Tub Sanitizer with minerals and up to 75% Less Chlorine

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Introducing a breakthrough in sanitizing that comes ready to use on your hot tub.  With the built in FROG @ease In-Line System, you simply open the cap on your hot tub, snap in the conveniently adjustable cartridges and enjoy weeks of cleaner, clearer and softer water. FROG @ease uses FROG Minerals and SmartChlor® Technology that creates Fresh Mineral Water® by killing bacteria two 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


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

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Video Introduction to FROG @ease Inline System


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. When the SmartChlor Cartridge is depleted, the FROG @ease Test Strip will show a lighter color than the out indicator on the bottle.

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

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.

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

What size hot tub will FROG @ease work in?

Hot tubs 150 to 600 are perfect for FROG @ease.

How does FROG @ease compare to bromine floaters or using chlorine?

With standard chemicals you experience peaks and valleys in your sanitizing routine.  When you add chemical, the level spikes, when you use the tub, the level drops. This yo-yo method goes away with FROG @ease because it maintains the same level of sanitizing all the time.  Plus it’s conveniently tucked away with easy access whenever you need to change a cartridge.

How can it work so well with 75% less chlorine?

SmartChlor is not a typical chlorine.  It will consistently maintain a 0.5 to 1.0 ppm free chlorine level. This would not be enough on its own; but with FROG minerals, it’s a perfect combination that kills bacteria 2 ways so you have a cleaner, clearer hot tub that’s wonderfully soft and odor free!

How long do the Mineral and SmartChlor cartridges last?

The mineral cartridge lasts four months or whenever the hot tub is drained and refilled. The SmartChlor Cartridge lasts 3-4 weeks depending on the size of your tub and how often it is used.

Is a FROG @ease System expensive?

SmartChlor is slightly more expensive than dichlor but less than other systems. Consumers who have tried it tell us it is SO worth the money because it makes owning a hot tub extremely easy with far less monitoring and no shocking for an entire month. You save time and the cost of shock treatments plus with up to 75% less chlorine, your suits won’t fade and your hot tub itself has less wear and tear.

Which hot tubs have the FROG @ease In-Line System built-in?

Marquis Spas, Caldera Spas, Artesian Spas and Hot Springs Spas all have the in-line system installed on select hot tub models at their factory.

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

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Brian M - January 8, 2023

Been using bromine in my hot tubs for years. This smartchlor is the only way to go! Simple easy to maintain spa water. No more adding chemicals, adjusting ph constantly. This has to be the best way to maintain your hottub.

Steve Brown - October 12, 2021

Awesome Product, really makes it easy on us to care for and maintain our hot tub. Thanks Everyone @ FROG.

Carol Wisman - May 19, 2021

Nothing but Happy! We've had our spa about a year now. Everything was going great. "Suddenly" I started "burning through" the Smartchlor cartridges. Now not happy, tried to troubleshoot on my own. (My 1 st mistake) Thought the cartridges were "light on chlorine". Grumbled many times to myself. Thought I was suddenly doing something wrong. I finally reach out to Dan. (2nd mistake of not just calling him 1 st!)He spent about an hour with me on the phone. Turns out all I needed was to do a " pipe purge". Easy fix. I'm sure my dealer told me about this particular maintenance thing, but being new to spa ownership, I forgot about this important step. Can't say enough good things about the effort Dan showed in helping me.

K Johnson - December 29, 2020

I absolutely prefer the FROG @ease Inline System. For me, it has taken the guesswork out of maintaining my hot tub. Before FROG, I had to constantly purchase multiple other products. This system is much easier to use, replaces almost everything I was using before, and has helped me to enjoy my hot tub again. I’ve actually started using my hot tub more frequently now. My advice to those who report their FROG cartridges don’t last: try lowering the dial setting. Depending on the size of your hot tub, start at a low number (like 1) and give it a day. Adjust each day by +1 until you find a number that works best for your tub. Or try reaching out to the dealer you purchased your tub from. They should be able to provide you with some helpful tips.

William J Inchuk - August 23, 2020

had new hot tub for a couple months now, the Frog system is wonderful so much easer then my old hot tub vary happy with the frog

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