11 Hot Tub Home Remedies That You Should Avoid

When it comes to hot tub maintenance, the internet is packed with “hacks” and other DIY tricks promising crystal-clear water and chemical-free soaking. While some of these tips may sound harmless, many can quietly damage your spa and create bigger problems down the road. In this article, we will explore some of the most common hot tub home remedies that you should definitely not try at home.

Essential Oils

Essential oils are popular for relaxation and aromatherapy, so it’s easy to see why some people think would be used in a hot tub. The problem is that they’re not designed to mix with water. This means that they cling to your spa shell and get pulled into your filtration system. Over time, that oil buildup can clog filters, restrict circulation, and strain your pump.

If you love a scented soak, you can use a variety of spa-safe aromatherapy products specifically formulated for hot tubs. They’re designed to dissolve properly and won’t interfere with your water chemistry.

Epsom Salts

Like hot tubs, Epsom salts are commonly used to alleviate sore muscles. The problem again is that Epsom salts are not designed for use in hot tubs. Adding Epsom salt disrupts your water balance in a few ways; commonly lowering pH which can slowly damage heaters, pumps, seals, and jets. Prolonged use can also cause cloudy water and biofilm buildup inside the plumbing. Once biofilm develops, sanitizers struggle to do their job properly.

Sphagnum Moss

Some online companies tout the use of Sphagnum moss in hot tubs to purify the water. These companies claim the moss simultaneously filters, purifies and removes biofilm from your water, eliminating the need for sanitizing chemicals like chlorine or bromine.

Like all “chemical-free” hot tub solutions, there’s not much evidence to support these claims. While sphagnum moss can help filter organic waste and remove biofilm it’s not able to actually kill any bacteria present in the water. It can help reduce the amount of bromine or chlorine needed to keep the water clear and safe to use, but will never eliminate it entirely.

Cleaning Filters In Your Dishwasher

On the surface cleaning your hot tub filters in the dishwasher can seem like a reasonable solution. The trouble is it just doesn’t work well. There’s no way to direct the water jets into the pleats, so you’ll end up with a sort of clean filter, but there’s still going to be junk left in the pleat folds. The intense heat of the dishwasher’s drying cycle also tends to deform and shrink the plastic components of the filter; meaning the filters might not even work properly when put back in the tub.

The best way to clean a hot tub filter is with a tool like the Filter Flosser that directs the water deep in the pleats of the filter, clearing out any trapped dirt and debris. You should also chemically clean the filter every 3-4 months to remove any trapped oils and lotions.

Dish Soap

Dish soap may seem like a convenient option for cleaning your hot tub shell or filters, but it often creates more problems than it solves. Soap residue is difficult to rinse away completely and can lead to excessive foaming once the tub is refilled. To avoid these issues, always use cleaning products specifically formulated for hot tubs. They’re designed to rinse clean and won’t leave behind residues that cause water quality problems.

Household Bleach

Bleach may contain chlorine, but it isn’t formulated for hot tubs. It lacks stabilizers for high-temperature environments and can be harsh on seals, gaskets, and jets. It’s also tougher on your skin.

Hydrogen Peroxide

Hydrogen peroxide is often marketed as a gentler or “chemical-free” sanitizer for hot tubs. While it does have oxidizing properties, it is not a complete sanitizer and cannot reliably kill all bacteria found in hot tubs.

On top of that, hydrogen peroxide can interfere with chlorine or bromine, making them less effective. This often results in cloudy water, poor sanitation, and false test readings. In warm spa water, it breaks down quickly, offering little lasting protection.

Vinegar for pH Control

Vinegar is frequently recommended online as a “natural” way to lower pH, but it’s not a reliable or safe solution for hot tubs. Its acidity can cause sudden and unpredictable swings in water chemistry, making it difficult to maintain proper balance.

Improper pH levels can corrode metal components, damage heaters, and irritate skin and eyes. Spa-formulated pH adjusters are far more reliable.

DIY Foam Reducers

Various online “hacks” suggest everything from vinegar to fabric softener to knock down foam. While these might temporarily collapse bubbles, they also introduce even more contaminants into your water.

Hot tub foam problems are best solved by correcting water balance, cleaning filters, and using approved defoamers when necessary.

Pool Chemicals in a Hot Tub

Pool products may seem interchangeable with hot tub chemicals, but they’re not. Hot tubs operate at much higher temperatures and therefore require different chemical formulations. Using pool chemicals can lead to ineffective sanitation and damaged components over time.

Using Table Salt in Non-Saltwater Spas

Some online DIY forums suggest adding regular table salt to “soften” water or mimic saltwater pool systems. In a spa not designed for salt chlorine generation, this can increase corrosion and void warranties.

Salt systems require specific equipment and controlled salt levels. Randomly adding salt to a traditional chlorine or bromine spa is not beneficial.

Wrapping Up

A well-maintained hot tub should be a place to relax, not a source of frustration or costly repairs. While DIY solutions might seem convenient, using unapproved home remedies can shorten the life of your spa and compromise water quality. By understanding what to avoid and relying on proper products and best practices, you’ll protect your investment and enjoy a cleaner, safer soak every time. When in doubt, trust expert advice over internet hacks, your hot tub (and your skin) will thank you.