Free $15 Visa® eGift Card with FROG® @ease+™, Nov. 1–30 only! Find Out More

Pool FROG® XL PRO®

In-line sanitizing system for in-ground pools up to 40,000 gallons

Pool FROG XL PRO brings Fresh Mineral Water®∞  to larger swimming pools by combining proprietary FROG Sanitizing Minerals® with a low level of chlorine to kill bacteria— with up to 50% less chlorine* than traditional pool care. Prefilled, replaceable pacs make it effortless: No Mess, No Guess, No Stress™. Just cleaner, softer water all season long.

Starting at $724.95

Find a Dealer

* Compared to the minimum EPA recommended chlorine level of 1.0 ppm for a stabilized swimming pool
∞ Cleaner, Clearer and Softer water for pools, hot tubs and swim spas

Benefits

  • Mineral technology and up to 50% less chlorine*
  • Easier on skin, hair and swim suits – and no smelly odors
  • Mineral Reservoir lasts 6 months; Pool FROG® 540C Pac lasts 2-3 weeks depending on use
  1. Balance the water:
    Test and adjust Total Alkalinity (80–120 ppm) first, then pH (7.2–7.8), then Total Hardness (200–400 ppm).
  2. Add stabilizer/conditioner if cyanuric acid is below 20 ppm to prevent rapid chlorine burn-off in the sun.
  3. Shock the pool with a standard chlorine shock to clear out contaminants and establish a chlorine residual. Never add through the skimmer or into the Cyclers.
  4. Mineral Reservoir: Install into the Mineral Cycler, replace the cap and set the dial to Setting 10. Replace the Mineral Reservoir every 6 months or once per pool season, whichever is shorter.
  5. Add FROG BAM® Turn off the pump, turn the Mineral Cycler dial to 0 and remove the cap. Insert FROG BAM upside down into the center of the Mineral Reservoir, pushing down to puncture the seal. Replace the cap, turn the dial to Setting 10 and run the pump for 90 minutes. Remove empty bottle and discard in trash or offer for recycling.
  6. Chlorine Pac: Once chlorine drops to 1.0 ppm, turn off the pump, turn the Chlorine Cycler dial to 0 and remove the cap — stand back to let any chlorine fumes dissipate. Insert the Chlorine Pac into the Chlorine Cycler, lining up the openings with the keys inside. Replace the cap by hand only, do not over-tighten. Set the control dial to match your pool size and pump run time using the manual’s chart. Adjust setting as needed to maintain a 0.5-1.0 ppm chlorine level.

Frequently Asked Questions

The Pool FROG XL PRO is an all-in-one sanitizing system for your pool. Prefilled pacs automatically dispense the right amount of chlorine and FROG Sanitizing Minerals – so you can enjoy with No Mess, No Guess, No Stress.

The Pool FROG XL PRO is designed for pools up to 40,000 gallons.

The Pool FROG Mineral Reservoir lasts 6 months or one pool season. Each Pool FROG Pac 540C Chlorine Cartridge lasts 2-3 weeks depending on the size of your pool and how often it is used.

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 care.

1 Pool FROG XL PRO and 1 Pool FROG Mineral Reservoir 5400

The Pool FROG XL PRO features two Cyclers in one installation. One Cycler holds the Mineral Reservoir that destroys bacteria all summer long and the other holds the Pool FROG 540C Pac that dispenses the appropriate amount of chlorine needed for each pool. This System creates Fresh Mineral Water∞ for pools up to 40,000 gallons. Pool FROG XL PRO does the work automatically so you can relax. Simply replace the Mineral Reservoir every 6 months and the Pool FROG 540C Pac every 2-3 weeks when empty.

If your pool is at the high end of the gallon range for the Pool FROG Model 5400 (between 30,000 and 40,000 gallons), Pool FROG XL PRO offers a larger chlorine pac that will last longer – which saves you time.

Your dealer would help you install a Pool FROG XL PRO on your pool and supply you with the Pool FROG pacs that go inside. After that, it’s easy! Simply replace the pacs when needed.

Mineral: Pool FROG Mineral Reservoir 5400

Chlorine: Pool FROG 540C Pac

Algaecide: FROG BAM®

Struggling with algae? FROG BAM is a pre-measured treatment t for up to 15,000 gallons (use more for larger pools) that prevents algae for 90 days—guaranteed. Best of all, it uniquely dispenses through the Mineral Reservoir of your Pool FROG System.

FROG Sanitizers transform your pool by combining proprietary FROG Sanitizing Minerals with low levels of chlorine to destroy bacteria. The result is Fresh Mineral Water®∞, our signature water quality experience that’s gentler on skin and free from the harsh, over-chlorinated feel of traditional pool care.

Let’s Connect

Product Reviews

Our customers love our products.

See and read our reviews for this product.

JT

Love my xl pro. Water feels like a salt pool without all the rust and chalky residue. I grew up with a pool and read the 1* reviews. I'd bet my paycheck those folks do not test their pool every day to make sure the pH or CYA (stabilizer) levels are not out of whack. Once my pH and CYA are good, I keep mine XL Pro set no higher than a 3, and make sure the air is bled out of the top. I use a 4-step chem program and have clear water all summer. The only time i have cloudy water is when the nearby farm fields get planted (late) and i know i'm going to have phosphates whenever those fields are plowed, tilled, fertilized and planted. i have a cheat code to fix that problem!

Monique

Our knowledgeable pool guy recommended the Frog system for us and we have had two fantastic summers so far. It is easy to use, helps lower the chlorine needed and keeps our pool a beautiful blue all summer long. We will never use anything else.

Mitch J

I've had my pool for 11 years now and the pool had the XL Pro installed along with an ozone generator. The ozone generator burned out in a few years and I did not replace the component.
This is my second XL Pro unit on the pool. Since I live in the desert southwest the pool is never out of service which means my XL Pro never gets a day off.
What I like is once you get it dialed in you're golden. This is hard to achieve when your nights don't drop below 100°F at night.
I can leave for a week and still come home to a nice tepid pool during the summer which is always nice.
What I don't like is how hard it is to remove the caps for both the chlorine and mineral pac housings. Chlorine is a bit easier than the mineral pac since you are refilling the cartridge housing at least monthly in the summer.
Bottom line is I think the Frog XL Pro is a good investment just for peace of mind. I think it would be a great idea if the engineers who designed the XL Pro took the entire housing and components and reworked the outer design to make it more user friendly.
In all fairness to King Technologies my unit is fully exposed to the environment. No shade, no housing not even a wall.

John

We had our pool installed last summer and had constant issues keeping the chlorine levels correct. It is impossible to maintain chlorine levels with this system. With the dial set to "1" the chlorine was 20 ppm +. Then turning it down to just off of "0" and there is no chlorine present in the pool. Not sure what the issue is. Good concept but doesn't seem to work properly. Getting ready to open my pool for the season in the next couple of weeks, and am apprehensive to even use this system…may just switch to tablets in the skimmer basket.

FROG Products

Hi John, we're sorry to hear that you're having troubles with chlorine levels in the pool. We'd love to talk with you more to find a solution. Our customer service team will be reaching out to you shortly.

Tim tieken

I used the algaecide that was supposed to prevent algae for 90 days guaranteed. The algae was back in 30 days. All of my chemical levels were correct and the filters were clean. The chlorine usage is very high. I have a new mineral cartridge installed and I have to put a new canister in every week with it set at 10 to keep the chlorine level idea. It used to be a good system until this year.

FROG Products

Hi Joe, Thanks for your review. We're sorry to hear that you have that many extra cartridges. We realize that the kits may not line up exactly with the timing of replacements. Would you please call Dan at 800-222-0169 or email him at dan.mosier@kingtechnology.com? He can offer some suggestions.

FROG Products

Hi Tim, we appreciate your post. It sounds like something else is going on – it could be high phosphates or nitrates. We need some additional information from you and will walk you through steps to help resolve this. Please call us at 800-222-0169 or email dan.mosier@kingtechnology.com

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.

Have a Water Care Expert in the Palm of Your Hand

Sign Up for Our e-Newsletter