How To Clean Your Hot Tub With A Flush Line

Regular cleaning and maintenance, including spa purge, are an essential part of owning a hot tub. Proper maintenance will ensure that you may enjoy a safe and ready-to-use spa while avoiding problems in the future.

You may have a decent grip on your water maintenance regimen, which includes balancing chemicals, cleaning or replacing your filter on a regular basis, and even draining and refilling your hot tub as needed. But have you thought about the pipes?

While the piping in the hot tub may be out of sight and out of mind, it may be a fertile ground for biofilm growth. A spa purge is the only method to go down into the pipes and clean out pollutants before they damage your hot tub pleasure.

If you’re unfamiliar with the term “spa purge,” it’s the act of running a cleanser through the pipe system. Its objective is to remove residue from every element of your hot tub’s plumbing, especially those locations that are difficult to reach during routine cleaning.

What Exactly Is A Biofilm?

Biofilms are live, complex bacteria that multiply in order to form colonies and communities. Because hot tubs create a warm and humid climate in which many bacteria and microbes thrive, they serve as breeding grounds for a variety of bacteria and germs.

The bacteria, which interact with body oils, skin cells, and organic matter to form biofilms, are introduced into the hot tub every time you use it. Biofilms are generally focused at the hot tub’s pipes and spouts, where water is rarely discharged. You should be cautious when purchasing old or reconditioned hot tubs, and you should always inspect them for biofilms that form in tubes so that you can thoroughly disinfect them.

What Is The Purpose Of A Hot Tub Line Flush?

You may believe that with all of the chemicals you pump into your hot tub, a thorough line flush is unnecessary. However, even if you take excellent care of your hot tub, the plumbing inside it might begin to acquire mineral deposits, filth, grime, and other contaminants that regular chlorine simply cannot remove.

A hot tub line flush will remove this accumulation, ensuring that your water remains as clean as possible.

How Often Should Hot Tub Lines Be Flushed?

A good rule of thumb is to flush the plumbing every time you drain the hot tub. Depending on how often you use your hot tub, you should drain and clean it at least once every three months. If you use your hot tub frequently, you should do it more often.

Signs That It’s Time To Clean

So, how do you know when it’s time to clean your hot tub plumbing? If you find slime collecting in your water, or if the water is hazy and has musty aromas, it may be time to flush your system.

Skin rash is another more dangerous warning indication. If you have a rash on your skin a few days after using your hot tub, it’s time to clean it thoroughly.

Clean The Plumbing In Your Hot Tub

While you should treat the water in your hot tub on a regular basis, you should also give your hot tub plumbing some tender love and care on a regular basis. When cleaning the plumbing in your hot tub, there are a few measures you must do to ensure that it is cleaned properly.

Replace Or Clean The Filter

The filters in the hot tub have most likely acquired a thick coating of algae, germs, oils, and organic substances. To be functional, they must be taken from the filter tank and thoroughly cleaned. 

Your hot tub’s filters will not last forever, so if you notice that they are becoming increasingly difficult to clean, consider obtaining new ones and changing them entirely.

Many can get away with hosing them down and spinning them in a TSP solution if there isn’t much to clean. One cup of TSP in 5 gallons of hot water is the suggested solution. To eliminate any lingering chemicals, you will need to rinse them with a hose. After that, you can let them dry. If they are extremely dirty, immerse them in the solution overnight and then remove them to dry.

If your filter has calcium or mineral limestone buildup, immerse it in an acidic solution for a few hours to remove it. The strainer can then be continued soaking in the TSP solution by completely rinsing it with a hose and drying it with air.

Please keep the following points in mind:

Do not attempt to use the dishwasher to clean the filters. Some claim that this practice is effective, yet it causes more harm than good. To clean the filter, do not use a pressure washer or laundry detergent a cleaning agent.

Installing The Filters Again

Before reinstalling the filter, make sure the hot tub filter container is clean and tidy. Many people overlook this area when cleaning their hot tubs. If there is still water in the container, a store-bought vacuum cleaner will readily remove it. Once the container has been thoroughly cleaned, you can proceed to reattach the filter cartridge.

Shocking Your Hot Tub

While you’re changing the water, you’ll need a solid foundation to begin your cleaning process. Using the water in the hot tub, add a spa shock and allow it to circulate through the water, cleaning as much of it as possible and destroying any germs that may be present in the process.

During this procedure, circulate the water at high speed and let it flow for at least 30 minutes, if not longer, before proceeding. 

Drain And Refill The Plumbing System

Add a hot tub line flush product to clean the biofilm from the pipes, then turn the jets to high and let the water circulate for 15 to 30 minutes. This system flush will break up much of the muck and filth that has accumulated inside your hot tub’s pipes, allowing it to become caught in the filter.

After the water has cycled, turn off the hot tub, cover it, and leave it for at least 5 hours. If it’s more convenient, you can do this in the evening and let it sit overnight.

One common method is to use vinegar, and while there’s nothing wrong with using vinegar to clean a hot tub, it’s not the ideal option for cleaning the plumbing. The sludge that accumulates in the pipes responds much better to a hot tub line flush, which breaks it down and allows it to be properly cleaned away. We strongly advise staying with that method to ensure that the pipes are clean and clear.

Turn Off The Power

After flushing your line, you must turn off your hot tub before proceeding. If you forget to turn it off, the hot tub pump will start when there isn’t enough water in the tub. This will cause the pump and filter to fail. To prevent the hot tub from unexpectedly opening while cleaning, it is advised that you directly close the hot tub at the circuit breaker.

Fill The Hot Tub With Water

There is no way to remove the hot tub line flush product without first removing the water. Take some time to study how to empty a hot tub if you’ve never done it before to guarantee you will be able to do it correctly.

Give The Hot Tub A Good Scrub

Take advantage of the fact that the spa is empty to give it a thorough cleaning. Wipe it down with diluted white vinegar, or use a hot tub cleaner designed specifically for removing accumulated crud from spa surfaces.

Whatever you use to scrub your hot tub, make sure to fully rinse it before refilling, otherwise, you’ll wind up with a bubble bath.

Taking Care Of Problem Areas

You may come across regions where scum or collected stains will not come off. You’ve tried several detergents and solutions, but they’re still fighting. That’s where baking soda comes in to help solve these issues.

Apply baking soda liberally to problem areas after making a thick, pasty combination of baking soda paste and water. Allow the baking soda to sit for a few moments to allow its cleansing properties to be effective against pests. To clean the baking soda mixture, use gloves, a damp cloth, or a sponge. If there is any remaining foam, you can reapply it and begin again.

Baking soda is a great choice for cleaning your hot tub at home because it is safe for the shell and avoids the need for harsh chemical cleaners.

Using The Correct Chemicals To Treat Your Water

Please refer to your hot tub’s owner’s manual for proper water chemical treatment. After you shock the water in your hot tub test the pH balance. You should switch off the gas valves in your hot tub at this point since they may interfere with the chemicals. Allow a 24-hour hot tub cycle with all chemicals until the temperature is comfortable for you.

If you have a brine chlorination system, rather than oscillating the water or adding chlorine or bromine, you should assess the salinity of the water because tap water already has certain salinity fluctuations. So check your pH, alkalinity, and calcium levels to ensure they’re all within acceptable limits. If required, add some salt. After it’s up and running, your chlorination system will take care of the rest.

Fill The Hot Tub With Water

Replace the filter in your hot tub, then fill it with fresh water. To keep as many impurities out as possible, use a hose filter. After filling the hot tub, test the water and add the necessary chemicals to properly balance it, then let the water circulate through the hot tub for at least 8 to 12 hours.

Check Your Results

After your hot tub has circulated a good amount of time, evaluate the water and consider shocking the new water to guarantee that all dirt, filth, and bacteria have been eliminated. If you do shock the hot tub, you must test the water again to ensure it is properly balanced before you decide to use it again.

If Nothing Works

Sometimes the pipes are simply too clogged with grime, grit, and other nastiness to be cleaned out with a simple hot tub line flush. When this occurs, you must either put on your plumber’s hat or call in a professional.

You or a professional can correctly disassemble the plumbing and clean the pipes by hand to completely remove all of the filth and grime that has built up inside the plumbing of your hot tub.

Final Thoughts

As the saying goes, it’s what’s on the inside that counts, and the same is true for your hot tub. Your water quality will suffer regardless of how clean the outside and shell of your hot tub are if the plumbing is not properly clean.

Doing a hot tub line flush doesn’t have to be difficult. And if you do it on a regular basis, you’ll soon be able to appreciate your hot tub a lot more because you’ll know the water you’re soaking in is actually pretty clean.