How to Flush a Hot Tub: Essential Steps to Success
Properly caring for your hot tub is both rewarding and essential, allowing you to enjoy relaxing spa sessions without running into issues. Keeping up with routine maintenance, such as regular water changes and occasional flushing, will help you maximise your investment and keep it running efficiently. If you're unsure how to flush a hot tub, read on! This guide provides step-by-step instructions on properly flushing your hot tub to guarantee long-lasting performance.
Preparing the Hot Tub for Flushing
To prepare the hot tub for flushing, you'll need to do a few things:
- Shut off the power and unplug the unit from its power source.
- Locate your filter compartment and remove any filters or other items inside it.
- Use Bromine or an approved sanitiser to help kill bacteria and break down biofilm in the plumbing lines before you start the flush.
- Turn off the pump and disconnect all plumbing lines from the submersible pump, including any connected to a filter compartment on model hot tubs that have them.
- Open up a ball valve or drain plug at the bottom of your hot tub to reduce the water level in preparation for flushing.
Gathering the Necessary Materials to Flush a Hot Tub
Taking care of your hot tub is a must to ensure its longevity and optimal performance. To flush the water and clean out any impurities, you must gather the necessary materials before starting. This includes chlorine shock, pH increaser and decreaser, algaecide, filter cleaner, a garden hose with a shut-off valve, test strips, rubber gloves and goggles to protect your eyes and hands from chemicals involved in the process.
Hot tub maintenance doesn’t require years of expertise; however, doing it correctly does demand accuracy and diligence. Safety should always come first when dealing with potentially hazardous chemicals, so read all warning labels carefully before starting.
Instructions for Flushing a Hot Tub
Once you have all of your materials, it’s time to get started. Here are the essential steps for flushing a hot tub:
- Start by adding chlorine shock, pH increaser and decreased, algaecide and filter cleaner as per instructions on product labels.
- Turn on the submersible pump and allow the chemicals to circulate through the hot tub lines.
- Turn off the pump, disconnect all plumbing lines from the submersible pump and turn off the ball valve or drain plug at the bottom of your hot tub.
- Attach a garden hose equipped with a shut-off valve to a designated flush port in your filter compartment.
- Turn on the hose and let the water run until it’s clear of any chemicals, usually 10–15 minutes.
- Once finished, turn off the hose and reconnect all plumbing lines to the submersible pump.
- Give your hot tub a thorough cleaning, paying special attention to covers and other items that come in contact with hot tub water.
- Fill your hot tub back up after flushing is complete.
- Add chemicals again as per product labels and turn on the submersible pump to circulate the chemicals.
- Test the water with test strips to ensure it is balanced and safe for use.
Flushing your hot tub will not only help keep things running smoothly, but also extend its life by removing any built-up contaminants or bacteria that could affect its performance and cleanliness.
Ensuring Proper Cleaning and Draining of a Hot Tub
Hot tubs provide a great way to relax and enjoy yourself. However, they require proper cleaning and draining to ensure they remain safe. Once completely drained, scrub down all the hard surfaces using a non-abrasive cleaner to remove any grime or dirt and inspect the filter compartments to make sure they are free of any blockages or obstructions. For this task you can use a specialised cleaner or a natural alternative like vinegar or watered-down baking soda - both do a great job at dealing with regular scum, biofilm and algae.
Testing the Water Quality After Flushing a Hot Tub
Once the flushing is finished and the water has been returned to normal levels, it’s time to test its quality. Use a test strip to check for chlorine, pH, alkalinity, bromine (if you use it in your hot tub) and calcium hardness levels. If they are too high or low, add chemicals to bring the levels back to normal. Read our guide to hot tub chemicals to learn more.
Water Balancing After Flushing a Hot Tub
Maintaining the balance of a hot tub’s water pH is an important part of owning one. After flushing, it's important to balance pH and alkalinity levels. The balance and adjustment of these levels create a safe bathing environment and help preserve the hot tubs' life expectancy. Unchecked, an imbalance can cause discolouration, staining of the interior shell, or bubbling due to excess waste build-up from improper cleaning.
Regularly Scheduling Time to Flush Your Hot Tub
Flushing your hot tub regularly is essential for optimal health, hygiene and performance. How often you need to flush your hot tub depends on your usage - start by flushing the water at least once every three months or even more frequently if necessary. This can help prevent bacteria from accumulating and reduce unwelcome odours caused by pollen and other organic residues. If your hot tub gets heavy use, you may want to flush the water more often. Time spent flushing your hot tub is time well spent.
Filling Up Your Spa Afterwards
Once you've finished flushing your hot tub, it's time to refill it with clean water. There are several different methods for this, but one of the most common involves using a submersible pump and hose connected to a ball valve on the side of your spa. Use the manufacturer's instructions or product manual as your guide - depending on the model, you may need to adjust the water level or ensure the filter compartment is covered.
Conclusion
Flushing your hot tub is an important aspect of maintaining your spa and keeping it running smoothly. With the right instructions, materials and dedicated time put aside, you can regularly flush your hot tub and prolong its life.
Ready to learn more about caring for your hot tub? Click here to read our ultimate guide to hot tub maintenance.
