How To Prevent and Remove Hot Tub Scum – Everything you need for your hot tub, pool or spa

Hot tub scum – yuck! Picture this: you’ve had a long day, and you’re looking forward to a relaxing soak in your hot tub. As you dip your toes into the warm, inviting water, you notice an unsightly layer of scum floating on the surface.

It’s not the serene and inviting scene you had in mind. Hot tub scum can be a real mood-killer, but fear not! In this guide, we’ll explore the causes of hot tub scum, effective ways to prevent it from forming in the first place, and how to banish it if it dares to invade your tranquil oasis.

Say goodbye to scum and hello to a pristine hot tub experience. Let’s dive in!

Contents show

What is Hot Tub Scum?

Hot tub scum refers to the accumulation of various organic and inorganic substances on the surface of the water in a hot tub. It often appears as a cloudy, foamy, or greasy layer that can develop over time. This unsightly buildup can be composed of a combination of body oils, lotions, cosmetics, sweat, sunscreen, hair products, minerals, and contaminants brought into the hot tub by bathers. It not only looks unappealing but can also create a breeding ground for bacteria and other microorganisms if left unchecked. It’s essential to address and prevent scum formation to maintain a clean, safe, and enjoyable hot tub experience.

How do you remove it?

Removing hot tub scum is crucial for maintaining clean and safe water. Here are steps to effectively remove scum from your hot tub:

Drain and Clean the Hot Tub:
- Begin by turning off the hot tub’s power and draining the water completely.
- Use a mild, non-abrasive, and hot tub-friendly cleaner to scrub the interior surfaces, including the waterline.
Rinse and Wipe:
- Rinse the surfaces thoroughly with clean water to remove any residual cleaning solution.
- Wipe the surfaces dry with a soft, clean cloth.
Check and Clean the Filters:
- Remove and inspect the hot tub’s filters. If they are clogged or dirty, clean or replace them as needed.
Shock the Water:
- Refill the hot tub with fresh water.
- Add a hot tub shock treatment according to the manufacturer’s instructions. This helps sanitize the water and break down organic contaminants.
Balance Water Chemistry:
- Test and adjust the water’s pH and alkalinity levels to ensure they are within the recommended range.
- Regularly check and maintain the sanitizer levels (chlorine or bromine) as per the manufacturer’s guidelines.
Use Enzyme-based Cleaners:
- Consider using enzyme-based hot tub cleaners or scum removers. These products are designed to break down and remove organic contaminants effectively.
Regular Maintenance:
- Encourage hot tub users to shower before entering the tub to remove excess oils and contaminants from their bodies.
- Establish a routine maintenance schedule, including regular water testing, cleaning the filters, and shock treatments.
Preventative Measures:
- Consider using a hot tub cover when the tub is not in use to prevent debris and contaminants from entering the water.
- Ensure that swimsuits are clean before entering the hot tub to minimize the introduction of oils and lotions.
Clarifiers and Flocculants (Optional):
- In cases of persistent scum or cloudy water, you can use clarifiers or flocculants. These chemicals help gather small particles and suspended debris, making it easier for the filter to remove them.
Consult the Manufacturer:
- Always follow the manufacturer’s guidelines for maintaining your specific hot tub model.

By following these steps and maintaining good hot tub hygiene, you can effectively remove scum, prevent its recurrence, and enjoy clean and inviting hot tub water.

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How do you prevent it?

Preventing it is essential to maintain clean and clear water. Here are some effective measures to prevent scum buildup in your hot tub:

Shower Before Soaking:
- Encourage hot tub users to shower and rinse thoroughly before entering the tub. This helps remove oils, lotions, and other contaminants from their bodies.
Regular Water Testing:
- Use water testing kits to monitor and maintain the hot tub’s pH and sanitizer levels. Balanced water chemistry inhibits scum formation.
Use a Hot Tub Cover:
- Keep the hot tub covered when not in use to prevent debris, dirt, and contaminants from entering the water. Make sure the cover is clean and properly fitted.
Clean Filters Regularly:
- Check and clean the hot tub filters on a routine basis. Clogged filters can lead to scum buildup. Follow the manufacturer’s guidelines for cleaning or replacing filters.
Shock Treatment:
- Perform shock treatments as recommended by the manufacturer. This helps sanitize the water and break down organic contaminants that contribute to scum.
Enzyme-based Cleaners:
- Consider using enzyme-based hot tub cleaners or scum removers regularly. These products can break down and digest organic contaminants, making them easier to filter out.
Clarifiers and Flocculants (Optional):
- Occasionally, you can use clarifiers or flocculants to help clear the water. These chemicals gather small particles and suspended debris, making it easier for the filter to remove them.
Regular Maintenance:
- Establish a maintenance routine that includes cleaning the tub’s interior surfaces, testing and adjusting water chemistry, and cleaning filters. Consistent maintenance is key to preventing scum buildup.
Educate Hot Tub Users:
- Inform all users about the importance of proper hot tub hygiene, such as showering before use and avoiding the use of lotions or oils while in the tub.
Avoid Using Hard Water:
- If possible, use soft water in your hot tub. Hard water can lead to mineral buildup, which can contribute to scum formation.
Change Water Periodically:
- Depending on usage, it may be necessary to partially or completely change the hot tub water every few months to refresh it and reduce the risk of scum buildup.
Monitor Water Temperature:
- Keep the water temperature at the recommended level (usually between 100°F to 104°F or 37°C to 40°C). Higher temperatures can promote the growth of bacteria and algae, leading to scum.

By implementing these preventive measures and maintaining a consistent cleaning and maintenance routine, you can significantly reduce the likelihood of scum formation in your hot tub, ensuring a more enjoyable and hygienic soaking experience.

In Conclusion

In conclusion, preventing and removing scum in your hot tub is a vital aspect of hot tub maintenance. Scum can not only affect the water’s clarity and quality but also impact your overall hot tub experience. By following a few simple steps, such as regular water testing, maintaining proper water chemistry, and practicing good hot tub hygiene, you can keep scum at bay.

Additionally, the use of enzyme-based cleaners, shock treatments, and other hot tub cleaning products can further assist in scum removal and prevention. Remember to stay diligent with routine cleaning and maintenance, as consistency is key in ensuring your hot tub water remains clean and inviting.

With these preventive measures and a commitment to cleanliness, you can enjoy the soothing and relaxing benefits of your hot tub without worrying about scum buildup. A well-maintained hot tub provides a clean, safe, and enjoyable environment for all your soaking and relaxation needs.

Happy Hot Tubbin’

Andi