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FROG® @ease® Sanitizing System for Sundance® Spas

Hot tub sanitizer with minerals and up to 75% less chlorine*

This hot tub sanitizing system combines proprietary FROG Sanitizing Minerals® with patented SmartChlor® Technology to create Fresh Mineral Water®∞ that’s cleaner, clearer and softer. Unlike traditional chlorine that yo-yos after every use, SmartChlor is a self-regulating sanitizer — automatically adjusting output to maintain a consistently low chlorine level for weeks at a time.

Starting at $59.95

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* Compared to the minimum ANSI recommended chlorine level of 2.0 ppm for a hot tub
∞ Cleaner, Clearer and Softer water for pools, hot tubs and swim spas

Benefits

  • Custom-designed to integrate with select Sundance Spas filter systems
  • Enjoy softer water, reduced chlorine odors and water that's gentler on your skin
  • Mineral Cartridge lasts 4 months; SmartChlor Cartridge lasts 3-4 weeks
  1. Fill the hot tub with fresh water. If using source water high in calcium, iron or other metals, check with your dealer first — a metal control product may be needed. Drain and refill the spa if switching from a bromine or biguanide system (no draining needed if converting from dichlor, as long as the cyanuric acid level is below 80 ppm).
  2. Test and adjust water chemistry using FROG @ease Test Strips: Total Alkalinity first (80–120 ppm), then pH (7.2–7.6), then Total Hardness (150–250 ppm).
  3. Add initial shock: Turn on the jets and pour one full packet of FROG Jump Start® start-up shock per 600 gallons directly into the water.
  4. Heat the water to your hot tub manufacturer’s recommended temperature.
  5. Install the Holder: Remove the filter lid. With the filter cartridge in place, slide the holder down over the pipe where the nut holds the filter cartridge on. Make sure the cartridge openings face the filter area and the fin on the holder fits between two pleats on the filter cartridge. Push the holder down using the top handle until it snaps into place.
  6. Set Mineral Cartridge (Blue): Twist and set the dial on the bottom of the cartridge to #7. No further adjustment is needed for the life of the cartridge. Insert it into the holder opening closest to the outside of the hot tub by inserting the bottom of the cartridge first and pushing it back until it locks into place.
  7. Set SmartChlor Cartridge (Silver): Turn the dial to match your hot tub size in gallons (see the chart in your FROG @ease for Sundance manual). Insert it into the holder opening closest to the inside of the hot tub, using the same procedure.
  8. Confirm the cartridges are completely underwater — add water to the hot tub if they’re not. Re-install the filter lid.

Frequently Asked Questions

FROG @ease is an easy, low-maintenance hot tub sanitizing system that helps maintain clean, clear hot tub water with less effort. By combining FROG Sanitizing Minerals with SmartChlor Technology, it creates Fresh Mineral Water∞ that’s Cleaner, Clearer, Softer and Easier® to care for. Unlike standard dichlor hot tub sanitizers, which spike and drop, SmartChlor maintains a consistent low chlorine level of 0.5–1.0 ppm. This self-regulating sanitizer automatically releases chlorine only when needed, making it one of the easiest ways to sanitize a hot tub without constant monitoring. Ideal for anyone looking for a simple hot tub water care solution, FROG @ease reduces chlorine use while helping maintain balanced water and simplifying ongoing hot tub maintenance.

This FROG @ease System was made specially for Sundance Spas Series 680, 780, 880 or 980. These unique half sphere shaped cartridges fit into a holder that then snaps onto the pipe holding the horizontal filter cartridge in place.

No. Use FROG @ease Test Strips only. Standard strips will show misleading readings with SmartChlor Technology.

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

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 from day 1 until the day the SmartChlor Cartridge is empty.

SmartChlor is a unique, patented type of chlorine. It will consistently maintain a 0.5 to 1.0 ppm free chlorine level as long as the pH is balanced. This would not be enough on its own; but with FROG Sanitizing Minerals, it’s a perfect combination that kills bacteria with minerals and a low level of chlorine that create Cleaner, Clearer, Softer® water.

The blue Mineral Cartridge lasts four months. The silver SmartChlor Cartridge typically lasts 3 – 4 weeks. When the SmartChlor Cartridge is depleted, the FROG @ease Test Strip will be a lighter purple color than the test strip bottle label. That is your cue that it’s time for replacement.

SmartChlor is slightly more expensive than dichlor but less than other systems. SmartChlor offers a nearly hands-off experience that automatically maintains consistent sanitizer levels, saving you time and guesswork while delivering clearer, more comfortable water with minimal effort. And with up to 75% less chlorine*, your suits won’t fade and your hot tub has less wear and tear.

Keeping your hot tub balanced will extend the life of your SmartChlor Cartridge. Keep pH under 7.6. Over circulation could also deplete the cartridge faster.

Fresh Mineral Water∞ is our signature water quality experience — clean, clear and silky-soft water made possible by our patented mineral technology combined with significantly lower levels of chlorine. The result is water that’s gentler on skin and free from the harsh, over-chlorinated feel of traditional pool and hot tub care.

1 FROG @ease for Sundance Spas Mineral Cartridge, 1 FROG @ease for Sundance Spas SmartChlor Cartridge, 1 FROG Jump Start Packet and 30 FROG @ease Test Strips

Let’s Connect

Product Reviews

Our customers love our products.

See and read our reviews for this product.

Michael Hermes

Working as much as I do I don't have time to be constantly battling my hot tub. I installed the Frog Ease system 1 month ago and I am amazed on how well this works. Due to my paranoia I was still checking this thing about every 3 days and I haven't had to add a single chemical to the tub. My water is crystal clear and doesn't stink. I'm sold, form here on out.

Joyce Yutzy

Frog system for Sundance spas, Sundance 880 modles are supposed to have an adapter to raise the gray holder to allow enough water mover between filters and cartridges. It's supposed to come with the spa, and mine didn't, can't get any help from Sundance as they have horrible customer service, and Frog says I have to buy it from Sundance. Maybe Frog should redesign this for the 880s or help with getting this Piece. I like the Frog system but this has been a hassle.

Beau Yatauro

Cant find this setup anywhere went over to the floating ball

Heath B Martin

I cannot find smart chlor replacement cartridges online for my 780 Sundance spa

FROG Products

Hi Heath! We do not sell Sundance cartridges online. Please visit your Sundance dealer to purchase!

Richard Fry

Hello where can I find Replacement Cartridges online for Sundance Spas? My zip code 08724

FROG Products

Hi Richard – to find a dealer near you, please enter your zip code in the top right corner of our website into the search box that says "Enter Zip Code." Once you select "go," you can check the hot tub filter to see all hot tub dealers near you. Any dealer that sells FROG @ease For Sundance® Spas will have this product listed to the right of their store name. If you need additional help, feel free to use the chatbox on our website, or email us at <a href="mailto:customer.service@kingtechnology.com" rel="nofollow ugc">customer.service@kingtechnology.com</a>!

Thor Kendall

Same as everyone else. Product seems to work well (1st time tub owner as of a few weeks ago) but I cannot figure out where to buy replacement cartridges.

FROG Products

Hi Thor, we'd like to help you find the right replacement cartridges! Our dealer locator can be used to help find these products near you – simply enter your zip code in the “Find a Dealer” search bar in the top right of our site, and we’ll tell you which stores in your area carry the products you need. For additional support, our Customer Service team will be reaching out shortly with some options for you as well!

Darrell

Like the product but can’t get replacement cartridges at my local Sundance dealer!

FROG Products

Glad to hear you're enjoying FROG @ease for Sundance Spas, Darrell! Although, we're sorry to hear that finding replacement cartridges has been a challenge. Our customer service team will be reaching out to you shortly with a few options so you can get the cartridges you need. You should see an email from them soon!

Shelley

Customer service got back to me immediately and provided websites where I was able to purchase the sanitizing cartridges. I appreciate that. So I have increased my rating to 4 stars (not 5 because the process for finally getting the cartridges was difficult).

Shelley

Can't find replacement cartridges anywhere for sanatizing system (separate Smartchlor and Mineral cartridges) for Sundance/Jacuzzi spa. I'm assuming I can use the floating sanitizing system instead? I like the product, but not being able to find replacement cartridges, even though I see that others have had this problem for a while, brings my rating down.

FROG Products

Hi Shelley, we apologize that finding replacement cartridges has been a challenge! As for your question, you can use the FROG @ease Floating System in your tub with no issues. If you would still like help finding replacement cartridges for your current system, our customer service team will reach out to you shortly. They'll provide options so you can get the cartridges you need. If you have questions regarding using the FROG @ease Floating System, they can help with that as well.

Keith A Barnes

I like the product but I'm about to give up and look for another solution because I can't get refills anywhere.

FROG Products

Hi Keith, we're sorry it's been challenging to find replacement cartridges for your system. We'd like to help — our customer service team will reach out to you soon with some options so you can get what you need!

Shauna Howell

So far the system is pretty user friendly and easy to maintain, although I can not find replacement cartridges online or in a store within a reasonable distance. I found a place to order cartridges for the Jacuzzi brand who owns Sundance but I have no idea if they are actually compatible because the model numbers start with J-. Not too convenient, unfortunately!

FROG Products

Hi Shauna, we're happy to hear that FROG @ease is working well for you! We'd like to help you find some replacement Cartridges, so our customer service team will be reaching out to you with some options soon!

Shane Luck

It works great as should,
Problem is I live in rural ND and don't always make it to a frog ease dealer.

Would like a online purchase option

FROG Products

Hi Shane, glad you're enjoying FROG @ease! Some dealers do offer online purchase options. Our customer service team will be reaching out to you shortly with some options!

Smartphone showing the FROG® Water Care App home screen with a personalized greeting, a preferred dealer card for Poolwerx in Minnetonka, and a “Test my water” button below a photo of a couple relaxing in a hot tub.

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