Swim spa maintenance comes down to 4 jobs: keep pH at 7.4 to 7.6 and sanitizer in range, clean the skimmer filter every week, clean the cover every month, and drain and refill the water about every 3 months. Those intervals and levels come straight from the 2025 Jacuzzi® swim spa owner’s manual.
The routine looks like hot tub care, but the scale is different. A Jacuzzi® J-13™ holds 1,344 gallons and a J-19™ holds 2,430, 4 to 7 times the 329 gallons in a Jacuzzi® Cabana 2500L hot tub. Chemical doses, drain time and refill time all grow with that volume, and a small mistake in balance takes longer to fix. This swim spa maintenance checklist covers what to do and when, with the exact levels to aim for.
Swim Spa Water Chemistry Levels
Water testing is the most frequent part of swim spa maintenance. Test the water 2 to 3 times a week, and keep it inside these ranges from the Jacuzzi manual:
| Reading | With ClearRay® | Without ClearRay® |
| pH | 7.4 to 7.6 | 7.4 to 7.6 |
| Free chlorine | At least 1.0 ppm | 3.0 to 4.0 ppm |
| Free bromine | At least 1.0 ppm | 2.0 to 4.0 ppm |
| Total alkalinity | 100 to 150 ppm | 100 to 150 ppm |
| Calcium hardness | 150 to 250 ppm | 150 to 250 ppm |
Balance alkalinity first, then pH, then sanitizer. Low pH corrodes metal parts in the equipment, and high pH leaves mineral scale on the shell. Either also weakens your sanitizer.
ClearRay® Active Oxygen is a UV system plumbed into the filtration line. It comes standard on the J-14™, J-16™, J-19™ and J-19DT™ and is optional on the J-13™. With it running, you can hold chlorine as low as 1.0 ppm instead of 3.0 to 4.0, which cuts both the chemical side of swim spa maintenance and the smell.
2 swim spa chemicals to never use. The manual warns against chlorine tablets (trichlor) and adding acid directly. Both can damage components, irritate skin and void the manufacturer warranty.
Weekly Swim Spa Maintenance
Do these every week:
- Test and balance the water using test strips or a liquid kit.
- Check or clean the skimmer filter. The manual calls for a weekly check, or sooner after heavy use. Rinse the cartridge with a garden hose, working between the pleats from top to bottom. Your control panel shows a reminder after a set number of days, so reset it each time.
- Skim the surface for leaves and bugs.
- Shock after heavy use. Run the jets and leave the cover open for at least 20 minutes after adding shock or pH chemicals, so the vapors escape instead of damaging the headrests.
- Check the water level. It should sit about 3/4 inch below the top of the skimmer opening.
Monthly Swim Spa Maintenance
- Deep clean the filters. Soak the cartridges in a filter cleaner overnight to remove oils and lotion that rinsing leaves behind. Keep a spare set so the swim spa never runs without filters.
- Clean and condition the cover. The manual recommends monthly care: hose off debris, scrub the top with mild soap, rinse, then apply a non-petroleum vinyl conditioner. Skip anything with silicone, alcohol or solvents, and never use soap on the underside.
- Wipe the cabinet and headrests with a mild soap solution. Never pressure-wash the cabinet, because water can reach the electrical equipment.
- Inspect the equipment bay for drips or loose fittings, and never store chemicals inside it. The bay gets hot and holds high-voltage parts.
3-Month Swim Spa Maintenance: Drain and Refill
Jacuzzi recommends replacing the water about every 3 months. You will know it is due when foam keeps coming back or the water loses its sparkle, even when your test readings look right.
- Find a legal drain point for the water, and check your city’s rules first.
- Attach a backwash hose to the hose bib beside the controls, run it to the drain, open the ball valve and close the filtration pump return valve.
- Run the circulation pump to push the water out, and wipe the shell with a sponge as the level drops.
- To flush the plumbing, add fresh water to the footwell while the old water pumps out. Keep at least 4 inches of water in the footwell so pump 1 stays primed.
- When the hose runs clear, turn off the pump, close the drain bib and keep filling.
- Fill through both filter fittings to prevent air locks. Never fill with softened water only; if your water is very hard, fill half with hard water and half with softened.
- Clean the waterfall control filter in the equipment area at every drain.
- Stop at about 3/4 inch below the top of the skimmer, reopen the return valve, rebalance the water and add sanitizer until you hold at least 1.0 ppm.
Clean the shell with a non-abrasive spa cleaner while it is empty, and rinse it well. Soap residue causes heavy foaming after the refill.
Yearly Swim Spa Maintenance
- Replace the ClearRay® UV bulb. The manual calls for a new bulb every year, and a message appears on the display when it is due.
- Replace filter cartridges when rinsing no longer restores flow or the pleats look frayed.
- Book a service check of pumps, heater and seals before the busy summer season.
These swim spa maintenance tasks cover most owners, but each model has its own filter count and equipment layout. Owner’s manuals, ClearRay® instructions and troubleshooting guides for every Jacuzzi® model are on our owner resources page.
Swim Spa Maintenance in South Florida
Heat, sun and storms change swim spa maintenance here.
- Sanitizer burns off faster in summer. Warm water and heavy use use up chlorine faster, so test more often from May to October.
- Never leave the shell empty in the sun. The manual warns against exposing an empty shell to direct sunlight, so drain early in the morning and refill the same day.
- Rain dilutes the water. Retest after a heavy storm and lock the cover straps when bad weather is on the way.
- Pool cages and landscaping drop debris. Leaves and pollen clog filters faster, so check them twice a week in peak season.
- Run the filter long enough. Jacuzzi’s troubleshooting section asks you to confirm the filter and circulation pump runs 8 hours a day.
Swim Spa Accessories That Make Maintenance Easier
A few swim spa accessories cut the time swim spa maintenance takes:
- A spare set of filter cartridges, so 1 set soaks while the other runs
- A cover lifter, which makes it easier to open the cover for testing and shocking
- A floating skimmer or leaf net for debris
- A reliable test kit or strips
- Steps with a handrail for safe entry during cleaning
If you are still choosing a model, the J-13™ to J-19DT™ range differs in water volume, filter count and whether ClearRay® comes standard, all of which change your swim spa maintenance routine. Compare them in the Jacuzzi® swim spa lineup, or read up on what a swim spa is and how it works before you decide.
Need Help With Swim Spa Maintenance?
Our Pompano Beach team supplies the water care products the manual refers to and can walk you through your first drain and refill. Stop by the showroom with a water sample, or contact us to schedule a service visit.
Frequently Asked Questions
1. How often should you drain a swim spa?
Jacuzzi recommends draining and refilling a swim spa about every 3 months. Drain sooner if foam keeps returning or the water loses its sparkle even when your test readings are in range. Heavy use, many swimmers and hot weather can shorten the interval, so let the water quality guide you.
2. What swim spa chemicals do you need?
A swim spa needs a sanitizer (chlorine or bromine), pH increaser and decreaser, alkalinity increaser, calcium hardness increaser if your water is soft, and shock. Keep pH at 7.4 to 7.6 and alkalinity at 100 to 150 ppm. Never use chlorine tablets (trichlor) or add acid directly, since both can void the warranty.
3. How do you clean a swim spa filter?
Remove the skimmer filter cartridge and rinse it with a garden hose, working between the pleats from top to bottom. Do this weekly, or sooner after heavy use. Once a month, soak the cartridge overnight in filter cleaner to remove oils. Replace it when cleaning no longer restores normal flow.
4. How much does swim spa maintenance cost?
Costs depend on your model, water volume and how often you use it. Plan for sanitizer, balancing chemicals, test strips, filter cleaner, replacement filters and an annual ClearRay® UV bulb, plus electricity and water for refills. A UV system lowers chemical use because you can hold chlorine at 1.0 ppm instead of 3.0 to 4.0.
5. Is swim spa maintenance harder than hot tub maintenance?
The tasks are the same, but a swim spa holds 1,344 to 2,430 gallons, several times more than a typical hot tub. Chemical doses are larger, draining and refilling take longer, and imbalances take longer to correct. A steady weekly swim spa maintenance routine prevents most problems.
6. What pH should a swim spa be?
Keep swim spa pH between 7.4 and 7.6. Low pH corrodes metal parts in the equipment, and high pH leaves scale on the shell and weakens your sanitizer. Balance total alkalinity to 100 to 150 ppm first, because it holds pH steady, then adjust pH.
7. How long should a swim spa filter run each day?
Jacuzzi’s manual asks owners to confirm the filter and circulation pump runs 8 hours a day. In South Florida summers, with heavy use and more debris, you may need to clean filters more often to keep that circulation working well. Check your control panel’s filter cycle settings after any power outage.
8. Can you use pool chemicals in a swim spa?
Some products overlap, but avoid pool chlorine tablets (trichlor), which the Jacuzzi manual warns can damage components and void the warranty. Swim spas run warmer than pools and hold less water, so dosing differs. Use spa-specific products and follow the amounts on the label for your water volume.