Why Does My Hot Tub Water Look Oily?

Why Does My Hot Tub Water Look Oily?

Why Does My Hot Tub Water Look Oily?

Hot tub water is one of the most commonly used products in homes. It’s essential for relaxation and body health, but it brings tons of issues.

Drinking hot tub water can lead to problems such as irritation, unpleasant taste, and mildew growth.

To keep yourself clean and uncontaminated, you need to know how to clean your hot tub water effectively.

Your hot tub water looks oily because there’s a film of soap that remains on the water’s surface, which happen when there are no bubbles to carry the soapy water away from your body. Bubbles are essential for washing off a hot tub conditioner.

If this happens often, it may show that your filter isn’t working as expected or that you’re not emptying your jetted tub drain after each use.

Here’s a tip to help you ensure your filter is not the problem.

You can help avoid the oily film that often forms on the surface of your hot tub water by using a cleaner and sanitizer designed explicitly for Spas and hot tubs.

These products include enzymes to safely break down oils, dirt, and body fats, which are the major culprits of that unattractive film.

While this is a great tip, you may not realize that you see an oil film on the water surface because of the conditioner.

Conditioners are quite safe and effective, but they release smaller amounts of oil than soap.

The conditioner gives your tub’s surface a fresh look, protecting your skin and hair from damaging chemicals.

How Do I Get Rid Of Oily Water In My Hot Tub?

You can get rid of oily water in your hot tub by using several methods.

Knowing how to decipher and categorize the type of oils in your water will help you decide on the type of treatment that will be best for your hot tub.

The two most common types, as determined by their color, are:

– Natural hydrocarbons

– Petroleum oils, which may be from mineral oil or other sources

The first category usually comes from oils shed into the water in skin cells. The second category comes from artificial sources, such as anti-freeze.

You can use a chemical called carbanion sold at chemical supply stores for down to the waterline look. It’s a strong acid, so it won’t affect the acid pH of your hot tub won’t, and it neutralizes any oil that contacts the water.

It would be best to do a tiny test area first to ensure you don’t harm the hot tub or its equipment.

For “up to the waterline,” you can use degreasing agents available at the chemical supply stores, such as sodium hyposulphite or sodium hypochlorite (bleach).

You should add these as a total solution so that none of it concentrates near the filter and no bleach enters your Spa.

For “above the waterline,” use a degreasing agent sold in the paint department of your local hardware store.

Dishwashing detergent is perfect for this purpose, as it works on all kinds of oil but won’t harm vinyl, plastic, or painted surfaces.

You can use a spray bottle and apply it directly to the oily areas, rubbing gently to spread the dishwashing detergent over all surfaces below the waterline.

Rinse only with water (not hot tub water), and let your hot tub sit for several more hours to ensure the detergent has time to work.

If you use your hot tub frequently, the oily deposits may come back in a few days. You will need to maintain a regular cleaning program if you have this problem.

Why Does My Hot Tub Water Feel Greasy?

Your hot tub water tub feels greasy because of the oils and film on top of it. These oils and film comprise beneficial bacteria, minerals, and other particles in the water.

All these nutrients release into your hot tub water as it bubbles. People rarely notice this greasy layer because it’s not visible when you only have a few inches of water in the tub.

Those who put their feet into the tub can see some greasy residue on the bottom of their feet when they get out after their soak.

The greasy film on top of the water is good because it’s full of nutrients that will boost the health of your skin and body. Healthy hot tub water should produce this greasy layer.

However, sometimes you may find that your hot tub water is too oily for your liking. You might think about draining the hot tub water and starting again when this happens.

However, before you do that, try these solutions to deal with an oily Spa situation:

  1. Use A Spa Filter

Spa filters are beneficial in dealing with the oiliness of your hot tub water. These filters can remove some oiliness and make your hot tub water cleaner, clearer and healthier.

They work by removing bad-smelling particles and other contaminants in your hot tub water. They also help remove pollutants like chemicals, dirt, soot, etc., from your hot tub water.

  1. Use An Ionizer

Ionizers are also helpful in dealing with oily water. These ionizers lure various harmful particles like dirt and bacteria into the ionizer.

It then uses a current of electricity to kill these harmful particles.

  1. Use A Spa Clarifier

Spa clarifiers work by attracting and trapping suspended particles inside the tub that are causing the oily water problem.

It then uses a high vacuum to remove these suspended particles from your water.

  1. Add A Natural Chemical

Baking soda has helped deal with oily hot tubs. It absorbs excess oil and dirt from the top layers of the water, thereby making your Spa cleaner and healthier.

You can add 1 cup of baking soda per 50 gallons of water in your hot tub. Adding this chemical will bubble up and re-release bubbles as it returns to its normal state.

  1. Add Some Vinegar To Your Hot Tub Water

Vinegar has acid properties that help lower the water’s pH level in your hot tub. This makes it impossible for unwanted particles and contaminants to grow inside it.

It also helps clean the surface of your hot tub by softening oils and greases that stick on its walls or floor. You can add 5 gallons of white vinegar per 10,000 water in your hot tub.

  1. Use A Degreasing Product

A degreasing product contains a type of algae that is efficient at removing unwanted particles from your hot tub water.

These algae eat away the foul odor and grease from your hot tub water, making it healthier and more lustrous.

You can add 2 cups of this algae per 10,000 gallons of water to your Spa to make it healthier.

Can One Use A Magic Eraser On Their Hot Tub?

Yes. You can use magic erase on your hot tub as you would anything else.

If you’re a bit more aggressive with using the eraser in your hot tub, it should have a pleasant effect and help remove built-up mineral deposits.

The process is straightforward:

Spray your hot tub liberally with water to moisten it first.

Liberally dust the area you wish to work on with the magic erase powder. Knead some of the dust into this area (rub-dough-like).

Cover your hot tub with a damp (not wet) cloth and allow the area you are dusting to dry.

Once dry, it is free to use as normal.

The powder will leave behind a residue but, if left, will dissolve in time, providing that the water level maintains a healthy level.

Ensure you check on it regularly. If you notice a buildup building up, repeat the steps above, and you will be ready.

Why Does My Hot Tub Feel Slimy?

Your hot tub feels slimy because it’s not being well cleaned, and the gunk, bacteria, algae, and other unwanted elements have built up on the inside and outside of your hot tub.

To prevent this, you need to clean your hot tub regularly. The best time to clean is when it’s closed or not in use.

You should also invest in a power filter that quickly and easily removes these unwanted elements from your hot tub.

One way to prevent your hot tub from feeling slimy is by keeping it covered when it’s not in use.

You should set the cover on the inside of the hot tub and should fasten securely to avoid any unwanted elements from entering and building up.

All you need to do is periodically check the inside of the cover and make sure that there are no holes or tears.

Replace or repair the cover if there are any issues, especially during winter when harsh weather can tear at a cover.

If you have a hot tub cover, it will help to prevent your hot tub from being slimy.

To ensure no elements have penetrated through it and into the water, one should fasten the cover securely and check throughout the swimming season.

If the cover is old or worn, replace it. Thus, you can ensure that your hot tub is always clean for swimming.

With a good power filter attached to your hot tub, you’ll know that your water is always pure and sanitary.

There are many different filters available, but you should always ensure that you attach the power filter to the supply tubing, not directly to the hot tub.

Attaching it like this will remove unwanted elements from your hot tub and keep your water clean and sanitary.

You should also note how frequently you need to clean your power filter or what type of filter you should use to prevent buildup.

How Do You Fix A Slimy Spa?

You can fix a slimy Spa by:

  1. Cleaning the jets.
  2. Fill with fresh water, and then add clean Spa salt if you can’t find any, or if your Spa is old and all the salt is gone.
  3. Running a bath at a high temperature to rinse out grime and dissolve minerals accumulated on pipes over time.
  4. Once you have rinsed out any mineral deposits, use white vinegar to clean pipes between jets where possible (but be careful not to let the acid touch marine life).
  5. Check the water chemistry is correct.
  6. Replace the filter and Spa blowers correctly.
  7. Check the filter checker (it must be on a timer, so it shuts off after 2 hours, not six as some think) and check to make sure your pump got power again.
  8. If you find the problem is low flow or even more than one problem, add a booster pump to solve the issue.

What Does Biofilm Look Like In A Hot Tub?

Biofilm looks like a slimy slime found on the sides and bottom of a hot tub. It can be brown, green, black, or white.

More often than not, it looks like the kind of film you might find on a wet surface in your bathroom.

This biofilm creates an environment where chemicals can respire without ultraviolet light breaking it down.

The result is pollution during the release of these chemicals into the air or water supply around the hot tub.

You’ll find some of these chemicals in the hot tub, as someone who does not understand how to care for a hot tub correctly can add others.

Biofilm has two characteristics. One is that it’s slimy, and the other is that it’s attached to the bottom of your Spa.

There might or might not be a colored ring around it, but, regardless, one should not allow biofilm to grow inside your hot tub because you will end up with excessive algae and have an unsafe environment.

A professional should clean your hot tub if biofilm forms inside.

Biofilm tends to grow best in dirty hot tubs. If you are not keeping up with the cleaning routine, you might have biofilm-forming inside the tub.

This can cause an unsanitary environment, and it can also put your health at risk.

Why Does My Hot Tub Have A Film On It?

Your hot tub has a film on it because of ACV. When you put it into your hot tub, the chlorine and other chemicals in the water react with the acid to give off a film of acetic acid.

There are many ways to remove this film, though some are more effective than others.

It would be best to try baking soda, vinegar, and soap suds on a sponge or cloth, followed by several minutes of rinsing in water.

I say to use a sponge or cloth because it’s hard to tell if you remove the film.

You will probably see it on your sponge, but you don’t know that you have removed the film if you wipe it off.

Many people prefer to use a commercial cleaner. There are many different commercial hot tub film removers, and they all work equally as well at removing the film.

The only difference is that some products contain more ingredients and may leave some residue on your hot tub, so you may have to give it more than once to remove all the film.

After this, you should then rinse your hot tub with a hose until the water runs clear.

The best and fastest way to remove the film is using a pressure washer. Before buying one, make sure you have the right tools or ask around to find out if anyone in your area has one.

Some people prefer to use everyday household products because they are easy and cheap.

Vinegar – If you do not want to purchase a commercial product, try using vinegar. Vinegar is an acid, and it will dissolve the film that an ACV hot tub leaves behind.

Pour vinegar into a bucket and dip in a sponge or cloth. Wipe the hot tub’s surface while you sprinkle more vinegar on it to make it easier to wipe off.

Using soap is also an effective way to remove the film, but not as effective as a commercial cleaner or vinegar.

Mix soap suds with water and then dip in your sponge or cloth and wipe off the surface of your hot tub.

Does Chlorine Get Rid Of Biofilm?

Yes. You can easily remove biofilm from your hot tub, swimming pool, and Spa with chlorine in one of two ways.

You can add chlorine to your water for 24 hours, or you can use a 10% bleach solution to do it.

It’s important to note that bleach has a much higher concentration of chemicals and time-released molecules, which means that you must use the 10% bleach solution for at least six hours.

Do not spill any on the water’s surface, as this could result in chemical burns or harm aquatic life.

When making homemade chlorine, use a 10% bleach solution to create chloramines and chlorine when you add it to your Spa or pool.

Don’t use straight bleach or hot water since this could burn or harm aquatic life. The bleach solution acts as a natural sanitizer in the water, killing bacteria and keeping your Spa clean.

There’s no need to test the chlorine levels if you use a 10% solution with hot water.

If you still have a chlorine pool test kit, test your water and add the appropriate amount of bleach solution to clean the pool.

You can use left-over bleach in your garden to kill off weeds. If you reside in a small city or town, the chances are that if you have a large lawn.

There will be little soil bacteria present as these cultures often die when exposed to chlorine. If so, you can use a 10% bleach solution as a weed killer.

Acidic soils are conducive to plant growth, but you can change this by applying bleach or chlorine to your soil.

The chlorine or bleach will kill any microbes and weeds that remain in the soil, giving your plants a chance to thrive.

Can Hot Tub Biofilm Make You Sick?

Yes. The nasty bacteria, viruses, and parasites that live in hot tub biofilms can make you sick.

These organisms can cause skin infections, including cellulitis, staphylococcus aureus (staph infection), and herpes simplex virus 1 (cold sores).

Legionella Pneumophila, a bacterium that causes Legionnaire’s disease, causes the most severe cause of illness.

In addition to the above infections, Legionella Pneumophila can invade your lungs and cause pneumonia.

In extreme cases, Vibrio Vulnificus can also cause skin infections like necrotizing fasciitis (flesh-eating disease).

These infections are usually only a problem when people submerge in the hot tub but could develop after exposure to the water.


Hot tub water that sits for long periods can become contaminated. To prevent bacteria and organisms from growing.

It’s essential to maintain your hot tub and make sure that it’s regularly disinfected. Use one of the methods listed above to remove biofilm from your hot tub to keep it clean and safe.


Hi! I' am Tom. I was a manager in one of the biggest stores for over 10 Years, am also an SEO by night. I don't like to call myself a blogger; they are very analytical, do email marketing, and know all SEO stuff. I faced many questions from customers about different products, and there was hardly any help on the internet. After learning all the things about these products as a manager the hard way, I decided to start a blog and help other people.

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