Discover Why Spa pH Drops and How to Fix It

Do you often struggle with keeping the pH levels of your spa in check? Whether you’re a new spa owner or an experienced one, dealing with a low pH can be quite challenging. Not only can it affect your spa’s water quality, but it can also damage your spa’s equipment and cause skin irritation.

But why does spa pH drop? In this article, we’ll explore the common causes of low spa pH, its effects on your spa, and most importantly, how to fix it. We’ll also discuss the importance of balanced pH and how to prevent low pH levels in the future.

So, whether you’re a seasoned spa owner or a newbie, keep reading to discover everything you need to know to keep your spa’s pH levels in check and maintain a healthy and safe spa environment.

Common Causes of Low Spa pH

If you are a spa owner, you may have experienced a sudden drop in your spa’s pH level. There are a few common reasons why this can happen. One reason is the use of acidic chemicals, such as chlorine or bromine, to sanitize the water. These chemicals can lower the pH level of your spa water over time.

Another common cause of low spa pH is a high concentration of minerals in the water, such as calcium or magnesium. These minerals can also affect the pH level of your spa water, causing it to drop below the optimal range of 7.2 to 7.8.

Furthermore, if your spa has a high bather load, it can cause the pH level to drop. Sweat, body oils, and other organic matter introduced by bathers can create an unhealthy environment for your spa and lead to imbalanced water chemistry.

Another contributing factor to low pH levels in spas is the lack of routine maintenance. Failing to regularly clean your spa’s filters or replenish its chemicals can result in a pH imbalance and other water chemistry problems.

Lastly, changes in weather can also affect the pH level of your spa water. Rainwater or other environmental factors can introduce contaminants that cause the pH level to drop. So it’s essential to check and maintain your spa’s water chemistry even more frequently during extreme weather events.

High Usage

One common cause of low pH in your spa is high usage. If you use your spa frequently or have a large number of users, the pH levels can drop quickly. This is because each person introduces sweat, lotions, and other contaminants that can affect the pH balance of the water.

Another factor to consider is how long you stay in the spa. The longer you stay in, the more likely it is that the pH levels will drop. The heat in the spa can also accelerate chemical reactions that lower pH levels.

To minimize the effect of high usage, it is important to keep your spa clean by regularly sanitizing it. You can also reduce the number of contaminants introduced to the water by showering before entering the spa and limiting the amount of lotions and oils used.

Heavy Rainfall

Heavy rainfall can cause low pH in your spa. Rainwater has a naturally low pH level and when it mixes with your spa water, it can bring down the pH level, making it acidic. This can affect the chemical balance of your spa and may lead to damage to the spa’s equipment and fittings. In this section, we will discuss how heavy rainfall can affect the pH level of your spa.

Runoff from surrounding areas – Heavy rainfall can cause runoff from surrounding areas to flow into your spa. This runoff can contain pollutants and debris that can affect the pH level of your spa water.

Dilution of spa chemicals – Heavy rainfall can cause the spa water to be diluted, which can affect the chemical balance of the water. This can lead to a decrease in the pH level and make the water acidic.

Increase in organic matter – Heavy rainfall can cause an increase in organic matter in your spa water. Organic matter can come from leaves, dirt, and other debris that get washed into the spa. This organic matter can consume the chemicals in the spa, leading to a decrease in pH level.

To prevent low pH levels due to heavy rainfall, it is important to maintain proper drainage around your spa area. You can also cover your spa during heavy rainfall to prevent runoff and dilution of spa chemicals. Testing your spa water frequently during and after heavy rainfall can also help you maintain the pH balance of your spa.

Contamination

Contamination is another common cause of low spa pH. This can occur due to several reasons, such as adding dirty or contaminated water to your spa, using low-quality chemicals or leaving your spa uncovered for a long time.

Organic matter, such as leaves, pollen, and dirt, can also contaminate the spa, leading to a drop in pH. These contaminants create an ideal environment for bacteria and algae to thrive, further affecting the pH level of the spa water.

Body oils, lotions, and makeup can also contribute to contamination and low pH. These substances contain organic compounds that can react with spa chemicals and alter the water’s pH level. Additionally, sweat and urine can also lead to pH imbalances in the spa water.

To avoid contamination, regularly clean your spa and change the water every three to four months. Also, ensure that the spa cover is always in place when not in use to prevent debris from entering the water.

Effects of Low pH on Your Spa

When the pH of your spa water drops below the recommended level, it can cause a variety of negative effects. Here are some of the most common consequences of low spa pH:

Skin and Eye Irritation: Low pH levels can cause skin and eye irritation, making it difficult to fully enjoy your spa experience. This can be especially problematic for individuals with sensitive skin.

Corrosion: Low pH can lead to corrosion of your spa’s metal parts, such as pumps, heaters, and jets. This can cause leaks and other serious damage that may require expensive repairs.

Algae Growth: Low pH can also create an environment that is conducive to the growth of algae, which can turn your spa water green and unsightly. Algae can also clog your spa’s filters and other equipment, leading to poor water circulation and reduced performance.

Scale Buildup: Low pH can cause scale buildup on your spa’s surfaces and equipment, such as the walls, floor, and heater. This can make your spa look dirty and decrease its efficiency over time.

Reduced Effectiveness of Sanitizers: Low pH levels can reduce the effectiveness of sanitizers, such as chlorine and bromine, leaving your spa water less safe and less clean. This can also lead to an increased risk of bacterial and other types of contamination.

Skin Irritation

pH plays an essential role in the health of your skin, and when it is off balance, it can cause skin irritation. Low pH levels in your spa can lead to dry, itchy skin and rashes, especially for people with sensitive skin. The acidity can break down the protective barrier of your skin, leaving it vulnerable to bacteria and other harmful elements.

To avoid skin irritation, it is crucial to keep the pH level of your spa within the recommended range. If the pH is too low, it is essential to take immediate action to restore the balance. Use a reliable testing kit to check the pH level regularly and follow the recommended procedures for raising the pH to avoid skin irritation.

Also, remember to shower before and after using your spa to remove any dirt, sweat, or other contaminants that may be on your skin. This will help keep your spa water clean and reduce the risk of skin irritation.

Importance of Balanced pH in Your Spa

Proper sanitation: Balanced pH is crucial for effective sanitation in your spa. If your pH is too low, your sanitizer may not work as effectively, leading to bacteria growth and other contaminants in your spa.

Comfortable experience: A balanced pH in your spa ensures that the water feels comfortable on your skin and eyes. Low pH levels can cause skin irritation, redness, and dryness, while high pH levels can lead to cloudiness and discomfort in your eyes.

Longevity of spa equipment: Balanced pH levels in your spa help to protect your spa equipment and extend its longevity. High or low pH levels can cause damage to your spa’s components, such as heaters, pumps, and filters, leading to costly repairs or replacements.

Optimal Sanitization

Proper sanitization is crucial to maintain a clean and healthy spa environment. When the pH level is unbalanced, sanitizers like chlorine or bromine become less effective, leaving bacteria and other harmful organisms to thrive.

Low pH can also cause spa water to become cloudy, making it difficult to see if the water is clean or not. This can lead to insufficient sanitization and an increased risk of illness or infection.

To ensure optimal sanitization, it is important to regularly test the pH level and adjust it as needed. This will help keep the water clean and clear, making it easier to maintain proper sanitization.

Simple Tips for Testing Your Spa pH

Invest in a Test Kit: To check your spa pH, buy a test kit from a pool supply store. You can choose from test strips, drops or digital meters.

Test Regularly: The pH level should be tested at least once a week, and more often if the spa is heavily used. Test the pH before and after using the spa.

Adjust the pH: If the pH is too high, add an acid like sodium bisulfate. If the pH is too low, add a base like sodium carbonate. Follow the instructions on the product carefully.

Take Precautions: Always wear gloves and goggles when handling pool chemicals. Also, make sure to store the chemicals in a cool, dry, and safe place away from children and pets.

Use Test Strips

One of the easiest ways to test the pH of your spa is by using test strips. Test strips are inexpensive and easy to use, making them a popular choice for spa owners.

First, dip the strip into your spa water and remove it after a few seconds. The strip will change color, indicating the pH level of your spa. Match the color on the strip to the chart provided with the test strips to determine the pH level of your spa water.

It’s important to note that test strips only give you a general idea of the pH level of your spa water. For more accurate results, consider using a digital pH meter or taking a water sample to your local pool and spa store for analysis.

Frequency of Testing

Regular testing of your spa’s pH is essential for maintaining proper water balance and sanitization. The frequency of testing depends on how often the spa is used and how many people use it. Generally, it is recommended to test the pH at least once a week.

If the spa is used more frequently, testing should be done more often. Additionally, if the pH is found to be out of balance, it is important to retest after making adjustments to ensure that the correct balance has been achieved.

Don’t forget to test your spa water after any significant changes, such as filling the spa with fresh water, adding new chemicals, or after heavy usage. Testing at these times will ensure that your spa’s water is safe and balanced for the next use.

Regular testing of your spa’s pH is easy and quick to do, but can save you time and money in the long run by preventing damage to your spa and ensuring that it remains a safe and enjoyable experience for all.

Effective Ways to Raise pH in Your Spa

If the pH in your spa is too low, it can be dangerous for you and your spa’s equipment. Here are some effective ways to raise the pH in your spa:

Add Soda Ash: Adding soda ash to your spa will raise the pH level. Be sure to follow the instructions on the package and test the pH level frequently.

Use Baking Soda: Baking soda is another effective way to raise the pH level in your spa. Again, be sure to test the pH level frequently and follow the instructions on the package.

Aerate Your Spa: Aerating your spa by turning on the jets will increase the pH level. This is a natural way to raise the pH level without the use of chemicals.

Drain and Refill: If the pH level in your spa is consistently low, it may be necessary to drain and refill your spa. This will help to reset the pH level and ensure a safe and enjoyable spa experience.

Add Soda Ash

Soda ash, also known as sodium carbonate, is an effective way to raise pH in your spa. It works by neutralizing the acid in the water and increasing the pH level. It is important to add the soda ash slowly and in small amounts to avoid overshooting the desired pH level.

When adding soda ash, first turn on the spa’s circulation system to help distribute the chemical evenly throughout the water. Next, add the soda ash to a bucket of water and stir until it dissolves. Finally, slowly pour the solution into the spa while monitoring the pH level with a test strip.

Remember that soda ash can also increase the spa’s alkalinity, so it’s important to monitor both the pH and alkalinity levels regularly and adjust accordingly.

It’s recommended to add soda ash in small increments of about 0.5 ounces at a time and wait at least 2 hours before testing the pH again. This will give the chemical enough time to circulate throughout the water and produce an accurate reading.

Use pH Increaser

If you prefer to use a chemical product, pH increaser is an option to raise the pH in your spa. The most common type of pH increaser is sodium carbonate, also known as soda ash. This is similar to baking soda, but with a higher pH level.

When adding pH increaser, make sure to follow the instructions on the packaging carefully. Typically, you’ll need to add a small amount of pH increaser to the spa water and then test the pH level after about 30 minutes to see if it’s in the desired range.

It’s important not to overuse pH increaser, as this can lead to a pH level that’s too high and can cause skin and eye irritation. Always test the water after adding chemicals to ensure the pH level is within the recommended range.

Remember to also maintain proper alkalinity levels in your spa, as this can affect the effectiveness of pH increaser and other chemical treatments. Alkalinity acts as a buffer to help stabilize pH levels and should be maintained between 80-120 ppm.

Aerate Your Spa Water

Aerating your spa water is another effective way to increase the pH level. This method involves introducing air into the water, which helps to increase the pH level naturally. You can do this by turning on your spa’s air jets or adding a spa fountain.

Keep in mind that aeration can also increase the total alkalinity of your spa water, which can in turn affect the pH level. You may need to adjust your total alkalinity levels as well to ensure optimal water balance.

It’s important to note that aeration alone may not be enough to significantly raise the pH level if it is very low. In such cases, you may need to use additional methods such as adding soda ash or pH increaser.

Preventing Low pH in Your Spa

Monitor pH Regularly: Regularly monitoring the pH level of your spa water is the first step in preventing low pH levels. Test the pH level of your spa water every week to ensure it stays within the recommended range of 7.2-7.8.

Use pH Stabilizer: Adding a pH stabilizer can help prevent low pH levels by maintaining the pH level of your spa water. pH stabilizers work by buffering the water, which helps to prevent fluctuations in pH levels.

Minimize the Use of Chemicals: Overusing chemicals in your spa water can lead to low pH levels. Be sure to only use the recommended amount of chemicals and follow the instructions carefully. Additionally, avoid adding chemicals to the water in quick succession as this can cause rapid changes in pH levels.

Keep the Water Balanced: Balanced water chemistry is essential in preventing low pH levels. Properly balanced water should have a total alkalinity of 80-120 ppm and a calcium hardness level of 150-250 ppm. Regularly checking and adjusting these levels as necessary can help prevent low pH levels.

Regular Maintenance

One of the most important things you can do to prevent low pH levels in your spa is to perform regular maintenance. This includes cleaning your spa regularly, keeping the water balanced, and checking the pH levels frequently.

It’s important to clean your spa filter regularly to ensure it is working efficiently. This will help to prevent debris and other contaminants from building up in your spa, which can lead to low pH levels.

Additionally, you should keep an eye on your spa’s water chemistry and balance the levels of alkalinity, pH, and calcium hardness. This will help to prevent pH levels from dropping too low or becoming too high.

Monitor Alkalinity

Alkalinity is an important factor to consider when maintaining the pH balance in your spa. Alkalinity is the measure of the ability of the water to resist changes in pH. A proper range of alkalinity helps to stabilize pH levels and prevent them from fluctuating too much.

To monitor the alkalinity in your spa, you should use a testing kit specifically designed for this purpose. The test kit will typically include test strips or drops that you can use to measure the alkalinity levels in your spa water.

If you find that the alkalinity levels are too low, you can add alkalinity increaser to your spa water. On the other hand, if the alkalinity levels are too high, you can add acid to bring the levels back down to the desired range.

Balanced Water Chemistry

Understand the importance of balanced water chemistry: Maintaining balanced water chemistry is key to preventing low pH in your spa. Balanced water chemistry ensures that your spa’s pH, total alkalinity, and calcium hardness are within the appropriate ranges.

Test your spa water regularly: Regularly testing your spa water is essential for maintaining balanced water chemistry. Test your spa water at least once a week, and adjust the chemicals as necessary to keep the pH within the recommended range of 7.2-7.8.

Use a pH stabilizer: Adding a pH stabilizer to your spa water can help prevent low pH. The stabilizer works by buffering the water and preventing rapid pH changes. Follow the manufacturer’s instructions for adding the stabilizer to your spa water.

Keep your spa clean: Keeping your spa clean is essential for maintaining balanced water chemistry. Regularly clean your spa’s filter, remove debris, and sanitize the water. This will help prevent contaminants from affecting the pH levels in your spa.

Frequently Asked Questions