Hot Spring Tri-X filter care: dishwasher, the circulation cartridge, and Limelight

Last reviewed November 11, 2026

Hot Spring’s 2025 Highlife manual splits the job in one paragraph. A standard filter is soaked in a degreaser such as FreshWater Filter Cleaner, then sprayed with a garden hose. A Tri-X filter “can be cleaned in the dishwasher using no soap and no dry cycle.” The same manual says Tri-X is exclusive to Highlife models, and that the spa has cartridges for the jet pumps plus a separate cartridge for the 24-hour circulation pump. The 2026 Limelight manual (50 Hz) describes one cartridge, a monthly cleaner soak, and no dishwasher^[69][70].

The Highlife manual does not print a part number, a diameter, or a cartridge count. Those sit on the Hot Spring model-year lookup, which is a dealer table, and on Hot Spring filter sizes by collection. This page is the cleaning split the manuals actually print.

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What the 2025 Highlife manual is covering

The manual’s cover list is Grandee, Envoy, Vanguard, Aria, Sovereign, Prodigy, Jetsetter LX, and Jetsetter, with an effective date of October 2024 for those 60 Hz model codes. The features page says Tri-X filters give 100 percent no-bypass filtration even when the jets are on, that they are exclusive to all Highlife Collection models, and that they are dishwasher safe^[69]. “Exclusive to Highlife” is the manual’s scope line. It is not a sentence about Hot Spot or Solana. Those collections are on the Hot Spot and Solana sections of the same lookup.

A later section describes the plumbing, not a shopping list. “Hot Spring spas are equipped with balanced filtration, meaning that the filter cartridges are sized to meet the needs of the jet pump system. Additionally, a separate filter is dedicated to serving the 24-hour circulation system.” It also says to rotate the placement of the cartridges in the compartment after each cleaning, and that more use means more frequent cleaning. It does not say the circulation cartridge is a different part number from the jet cartridges^[69]. If the well had three pleated cartridges, the count to put back is three. That count is discussed in spas that use more than one filter. The pleated Highlife body in the Unicel guide is C-6430, 6" (152 mm) × 10-1/2" (267 mm), open 1-15/16" (49 mm) at both ends. The Highlife manual’s Tri-X sentence is a different cleaning method for the cartridge that is in that well when the spa was built with Tri-X. Size alone does not tell those two apart.

Removal, then two different cleans

1. Disconnect power by tripping the GFCI breaker in the subpanel or at the end of the power cord^[69].
2. Set the filter-compartment cover aside and remove anything floating in the compartment.
3. Turn the filter retainer handle, on the top of the cartridge, counterclockwise until it comes off the filter standpipe. Remove the retainer and the cartridge.
4. Do not pull the standpipes while debris is in the compartment. The manual says that debris can enter the plumbing, and it says never to remove the suction fittings. It also says not to sit on the filter lid.
5. Clean what you removed, using the branch below that matches the cartridge in your hand.
6. Reinstall by reversing those steps. Do not overtighten. The warning under the steps is: do not use the spa with the filter cartridges, or the filter standpipes, removed.

Standard filter, in the manual’s words: soak it in a filter degreaser such as FreshWater Filter Cleaner, following the package directions, then spray it with a garden hose on a clean surface until it is clean. Rotate it while spraying if debris is stuck between the pleats. That is the pleated-cartridge path. The general version of the same soak is in how to clean a hot tub filter.

Tri-X filter, the next sentence in that same step: it can be cleaned in the dishwasher using no soap and no dry cycle. The manual then says to contact a Hot Spring dealer for details. It does not print a cycle name, a temperature, or a rack position. It does not say to put a standard filter in the dishwasher. Jacuzzi’s filter article still says a dishwasher can warp end caps. That conflict, and why this site no longer treats “no dishwasher” as universal, is on the dishwasher page.

The silver-ion cartridge is not either of those filters

The same Highlife manual describes a FreshWater Ag+ silver-ion purifier: silver-infused beads that release silver ions, used with MPS or chlorine. It says a weekly super-chlorination or shock is required to reactivate the silver-ion cartridge, and that without that weekly shock the cartridge may stop releasing silver. It also says to use only dichlor or liquid chlorine, that silver is not compatible with bromine or biguanides, and not to use a water clarifier^[69]. None of that is a Tri-X instruction or a C-6430 instruction. Replacing the pleated or Tri-X cartridge does not renew the silver beads, and a silver cartridge does not take the place of the filter the circulation pump is pulling through.

Clean Screen is a third, separate object. The manual calls it a pre-filter for fill water, recommended and not required, used when you fill through the filter compartment. It is not the cartridge under the retainer.

Limelight, from the 2026 50 Hz manual

The 2026 Limelight manual on Hot Spring’s UK site covers Prism, Pulse, Flash, Flair, Flair DL, Beam, and Strobe. It says Limelight spas are equipped with one filter cartridge, sized for the jet pump, and that Watkins recommends cleaning it by soaking in a filter cleaner at least once a month. More use means a shorter interval. The removal steps match the Highlife list: power off at the RCD, retainer counterclockwise off the standpipe, do not remove standpipes while debris is present, never remove suction fittings, hose after the soak, do not overtighten, and do not use the spa with the cartridges or standpipes removed^[70].

That manual does not use the word Tri-X and does not mention a dishwasher. A Limelight owner who follows the Highlife dishwasher sentence is using a different collection’s instruction. Which pleated body a Limelight year takes, including the 35 / 50 / 75 sq ft disagreement on 78161, stays on the sizes page. The Limelight manual also names a Silent Flo 5000 circulation pump and lists a clogged filter cartridge as one reason its thermal cut-off trips. A flashing or flow fault after a dirty cartridge is the subject of flow errors and the filter.

Replacement years are still the ones Hot Spring publishes elsewhere: 2–3 years for a polyester cartridge and 4–6 years for Tri-X on the filter article, and three years on the maintenance page, which does not name Tri-X. Those sentences are compared in how often to replace a hot tub filter. Drain-day and winter storage of the cartridges are in what to do with the filter when you drain and refill. Seating the cartridge after the clean is in how to install a cartridge.

Questions

Sources

29. Hot Spring Highlife Collection Owner’s Manual (2023): service information and logo-light troubleshooting
69. Hot Spring Highlife Collection Owner’s Manual (2025): Tri-X dishwasher line, standard-filter soak, circulation filter, silver-ion cartridge
70. Hot Spring Limelight Collection Owner’s Manual, 50 Hz (2026): one cartridge, monthly cleaner soak, Silent Flo 5000

This guide summarizes published manufacturer and public-health guidance; always follow your own spa’s owner’s manual. See our disclaimer.