Why did my first vinegar flush produce foam, cloudy water or debris?

Seeing residue come out during the first vinegar flush is what the flush is designed to do. During production, shipping and installation, small amounts of dust or construction debris can settle in the jet lines, and circulating the vinegar and water mixture through every jet and hose carries that residue out before your first bath. Cloudy water and a little foam usually have simple explanations as well, covered below, and clearing the pump inlet cover in the same session catches whatever the flush stirs up.

What the First Flush Is Actually Doing

The recipe is the same before the first bath and once a month afterward: 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. Filling above the highest jets submerges every line, and running the systems moves the mixture through the whole plumbing loop.

It helps to know that the two massage systems are plumbed differently, because they shed residue differently. The hydro massage draws bath water in through the pump inlet cover, pressurizes it and sends it back out through the hydro jets, so anything loose inside those lines comes out into the bath water where you can see it. The air massage uses its own pump that blows only air through sealed, fully plumbed lines to the air jets in the seat and between the legs, so what you see from those jets is bubbles, with any residue arriving at the surface rather than in a stream. What Is a Bubble Tub and How Does Air Massage Work? explains both systems and the push controls that run them. On the three-speed air push control, the first press is high, the second is medium, the third is low and a fourth press turns the system off, so the flush can run at whichever speed you prefer.

Debris, Flakes or Grit in the Water

This is the expected result of a first flush. Dust and construction debris from the factory, the crate and the installation settle in the lines, and the first flush is the moment they leave. Once the tub drains fully, the lines are fresh for your first soak.

1. Let the flush run its full 10 minutes, then drain the tub completely.
2. Clear hair and debris from the pump inlet cover, the suction grate inside the tub where the hydro pump draws water in. Every drop that feeds the jets passes through it, so it is where loose material collects.
3. Wipe the cover with a non-abrasive towel and an approved cleaner such as Dawn dish detergent, then rinse the shell.
4. Fill the tub for your first bath as normal.

The inlet cover is also the first thing to check later in the tub's life whenever jets are weak or gunk appears from the jets, since a cover that is partly blocked starves the pump before anything is actually wrong with it.

Cloudy Water During the Flush

If your tub has Infusion Microbubble Therapy and that system ran during the flush, cloudy water is the therapy working, not something in the water. One touch of the micro button generates billions of microbubbles from a single port, and the water turns from clear to completely cloudy as they fill the tub. The milky look is the microbubbles themselves, which produce up to 70 percent more oxygen than regular tap water. Touch the micro button again and the system turns off. Can I Use Bath Salts or Oils With Infusion Microbubble Therapy? shows the effect on video and explains why the therapy is designed to run in plain, clean water.

On a tub without microbubbles, cloudiness during the first flush is the same residue described above, suspended in the water while the pumps circulate it. It goes down the drain with the mixture when the 10 minutes are up.

Foam on the Surface

The flush itself is only vinegar and water. Foam appears when something soapy is in the tub while the systems run, because the hydro and air systems churn the water constantly and whip soap into far more foam than a standard bathtub would. The bubble bath guidance makes the point vividly: a single capful can produce a mountain of foam that climbs over the deck, which is why owners are told to start with a small fraction of a capful and let the jets run before adding more. The same physics applies to any soap, bubble bath or cleaning product left in the shell or on the jets before the flush starts.

• Do not add bubble bath, shampoo or dish soap to the flush water. The recipe is vinegar and water only.
• If foam gets ahead of you, switch the jets off for a moment and let it settle.
• Afterward, rinse the tub and run the hand shower over the jets so no soap film dries inside the lines.
• Keep bath oils, bath beads and fragrance oils out of any Ella tub with a therapy system, and skip bath bombs entirely, since their residue is what later shows up as flakes from the jets.

How Can You Make a Bubble Bath at Home in Your Walk-In Tub? covers the right way to enjoy foam once the first flush is done.

After the Flush: The Purge, and How Often to Repeat It

About 20 minutes after the air pump is turned off, the Auto Purge starts on its own and runs for 120 seconds to blow residual water out of the air lines. It is fully automatic, cannot be stopped, and is normal even if it starts while you are in the tub, so a burst of air and water from the air jets after your flush is not a fault. Because the air lines clear themselves this way and the systems are fully plumbed, you do not flush after every bath. The published routine is one flush before the first bath and one a month after that.

There is one other time the first-flush rule applies: a tub that has sat unused while you were away. The vacation and seasonal shutdown checklist has you drain the tub, leave the door open and run the standard vinegar flush before the first bath when you return, and a little residue in that flush is as expected as it was on day one.

When to Contact the Team

If anything seems unusual, or the water does not run clear afterward, open a ticket at ellasbubbles.com/support or call your Ella dealer or the team at (800) 480-6850. Have your serial number, a photo of the pump inlet cover, a short video of the jets running and a note on when the flush was done, so the team can see exactly what is coming out of the lines.

Related Guides

• Before Your First Bath: The Initial Vinegar Flush and First-Use Checklist
• Printable Monthly Maintenance Checklist for a Walk-In Tub
• Why Do Black Flakes or Slime Come Out of My Tub Jets?

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