Can I Use Epsom Salt Safely in a Jetted Walk-In Tub?

Yes. Plain Epsom salt is safe in a jetted Ella walk-in tub as long as it is fully dissolved before it goes into the water, and once dissolved it will not harm the pumps, the in-line heater or the jets. The only risk to the jets is an undissolved crystal lodging in one, and the only risk to the finish is salt water drying on chrome or stainless trim, so dissolve the salt first, drain promptly and rinse. Epsom salt is the one bath additive Ella treats differently from the products covered in Is Bubble Bath, Bath Bombs or Bath Oil OK in a Jetted Walk-In Tub? What the Jets Can and Cannot Handle, and this page is about Epsom salt on its own.

Why Epsom Salt Is the Exception Among Bath Additives

A jetted Ella tub draws bath water in through the intake, pushes it through the pump and the in-line heater, and sends it back out through the jets. Whatever is in the water makes that trip too. Fully dissolved Epsom salt is mineral in solution, so it travels through the lines and comes back out as cleanly as the water itself, and it rinses down the drain when you are done. Bath bombs, scented bath salts and bath oils behave differently. Their oils coat the inside of the pumps and lines where they are hard to flush out, their dyes travel into the jet system, and glitter, confetti and floral material are solids that never dissolve. That is why Ella's product tables put plain Epsom salt in the yes row, with care, and put bath bombs in the not recommended row for every jetted tub. The reasoning behind the bath bomb verdict is laid out in Can I safely use bath bombs in a jetted walk-in tub?.

The important word is plain. A product sold as Epsom salt that also carries fragrance oil or color is a scented bath salt, and it falls under the not recommended rule. If you use one anyway, use it sparingly, dissolve it fully and rinse thoroughly, but the safe habit is to keep scented products out of a jetted tub altogether.

The Epsom Salt Routine, Step by Step

1. Dissolve the salt completely in a cup or bowl of warm water before it goes anywhere near the tub. Stir until no crystals are visible. This is the single step that protects the jets, because an undissolved crystal is the only thing in Epsom salt that can lodge in one.
2. Enjoy your hydro, air or microbubble therapy first with plain water, then switch it off. This is Ella's most careful habit rather than a hard requirement, and the next section explains the difference.
3. Add the dissolved salt to the bath and soak with the water still.
4. Drain the tub as soon as you are finished rather than letting salt water sit against the trim.
5. Rinse the whole tub with the hand shower. Pay special attention to the jet covers, drain plugs, handles, faucet and every other piece of chrome trim, and wash the residue down the drain.
6. Wipe the chrome and the stainless threshold dry with a soft cloth.

Can the Jets Run While Epsom Salt Is in the Water?

They can. Ella's guidance is that fully dissolved Epsom salt will not harm the pumps, the heater or the jets, and Ella's product table lists Epsom salt as fine for the jetting system. The reason the team still suggests therapy first and salt second is practical. Dissolving the salt in a cup guarantees no crystal reaches a jet, and adding it for a still soak at the end means the salt spends less time circulating through the pump and lines, so there is less residue to rinse out afterward. If you prefer a jetted soak with the salt in, dissolve it thoroughly, keep it plain and rinse well when you are done.

Soap, shampoo and body wash are a separate subject. They are fine every day, with or without the jets running, and the thing to manage there is foam rather than residue, as Can You Use Bubble Bath or Shampoo With the Jets Running? explains. If your tub is a soaking-only model with no pumps, the rules are much more relaxed, because there are no lines for anything to travel through.

Protecting the Chrome and Stainless from Salt Spots

The one place Epsom salt leaves a mark is on metal. Salt water that dries on chrome or stainless trim leaves spots that look very much like rust, and salt residue left sitting on chrome can eat at the finish over time. The threshold, the drain and drain plugs, the jet trim, the faucet and the handles are the places to watch. Prevention is a rinse and a wipe after each salt soak.

• If spots have already appeared, wipe them with mild soap and water on a soft cloth, then dry the area. If the spots lift, they were deposits and you are done.
• Never use an abrasive pad, powder or harsh chemical on stainless or chrome. A worn plated finish spots more easily afterward.
• If the spots stay, do not scrub harder. Take close photos in good light and send them in with your model and serial number. The finish and plated finishes carry the Lifetime Limited Warranty for defects, and photos are how the team confirms what they are looking at.

Why Are There Rust Spots on My Tub's Stainless Threshold or Drain? walks through that check in order, including hard water and cleaner damage as the other likely causes.

Maintenance When Salts Are Part of Your Routine

Salts can mean the tub and its plumbing need cleaning a little more often, so keep up the regular monthly maintenance. The flush is the same one used before first use and once a month: combine 2 cups of white vinegar with 2 cups of water, fill the tub with water to one inch above the highest jets, add the mixture, run the tub for 10 minutes, then drain. A flush after every bath is not necessary. The rinse and wipe after every salt soak is what keeps the chrome bright between flushes.

What to keep out of a jetted tub entirely: bath bombs, scented or colored bath salts and bath oils, because what they leave behind travels into the pumps and jets and is hard to flush back out. If a jet seems weaker after a salt bath or you suspect something has lodged in it, open a request at ellasbubbles.com/support or call (800) 480-6850 with your model and serial number and a note on what has gone into the water.

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