What To Do If Your Spa Alkalinity Is Too High?


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Having a spa is a great way to unwind and relax after a long day. However, keeping your spa water properly balanced can be a daunting task. One of the common problems spa owners face is high alkalinity. If you’re experiencing high alkalinity in your spa, it’s crucial to take action and address the problem promptly.

High spa alkalinity can lead to skin and eye irritation, cloudy water, and can affect the efficiency of sanitizers. The good news is, there are many ways to prevent and correct high alkalinity levels in your spa, and this article will show you how.

In this article, we will explore the signs of high spa alkalinity, tips on how to lower it, and why balanced spa water is essential. By the end of this article, you will have a clear understanding of what to do if your spa alkalinity is too high.

Don’t let high alkalinity levels ruin your spa experience. Keep reading to learn more about the signs, solutions, and importance of balanced spa water.

Understanding Spa Alkalinity

Spa alkalinity is a crucial component of balanced spa water. It is the measure of how much of the alkaline substances are present in the spa water. When the alkalinity level is high, it can cause a host of problems in your spa. Understanding spa alkalinity is the first step in keeping your spa water healthy and crystal clear.

High spa alkalinity can lead to various issues, including skin and eye irritation, cloudy water, and scale buildup on the spa’s surface. On the other hand, low alkalinity can cause the spa water to become acidic, which can cause corrosion of the spa’s components. Therefore, it is essential to maintain the proper alkalinity level to keep your spa running smoothly.

The ideal spa alkalinity range is between 80 and 120 parts per million (ppm). This range ensures that the spa water remains balanced, and the other chemicals you use, such as chlorine or bromine, work effectively. Regularly testing your spa water is essential to ensure that the alkalinity level is within the recommended range.

There are several ways to adjust the spa alkalinity level, including adding alkalinity increaser or decreaser chemicals. Before adding any chemicals to your spa water, it is crucial to read the manufacturer’s instructions carefully and follow them to the letter. This way, you can avoid any mishaps and ensure that your spa water remains balanced.

What is Alkalinity and How Does it Affect Your Spa?

Alkalinity refers to the level of alkaline substances in your spa water. Maintaining proper alkalinity levels is important because it helps stabilize the pH of your water, making it easier to maintain the right balance of chemicals. Alkalinity is measured in parts per million (ppm).

When the alkalinity level is too high in your spa, it can cause several issues. The water can become cloudy, and you may notice scaling on the walls of your spa. High alkalinity can also make it difficult to adjust the pH of the water, as it acts as a buffer and resists changes to pH levels.

On the other hand, low alkalinity can lead to corrosion of your spa’s equipment, including the heater and pump. It can also cause skin irritation and damage to your spa’s surface.

  1. How to test for alkalinity: You can use a test strip or liquid test kit to check the alkalinity levels in your spa water. The ideal range for alkalinity in spas is between 80-120 ppm.
  2. How to adjust alkalinity: To lower alkalinity, you can add muriatic acid or sodium bisulfate to your spa water. To raise alkalinity, you can add sodium bicarbonate. Always follow the manufacturer’s instructions when adding chemicals to your spa.
  3. How often to check alkalinity: It’s important to test your spa water regularly to ensure that the alkalinity levels are within the proper range. We recommend checking the levels once a week or more frequently if the spa is used heavily.

Keeping your spa water balanced is crucial for both the longevity of your spa and your own health and enjoyment. In the next section, we’ll go over the signs of high alkalinity and what you can do to address them.

Signs of High Spa Alkalinity

Cloudy Water: If your spa water is cloudy and has a milky appearance, it is a sign of high alkalinity. High levels of alkalinity can cause the minerals and other impurities to become suspended in the water, leading to cloudy water.

Scaling: When the pH and alkalinity levels are high, it can cause mineral deposits to form on the surfaces of the spa, including the walls, floor, and equipment. These deposits are known as scaling and can be difficult to remove.

Skin and Eye Irritation: High alkalinity can cause skin and eye irritation to those who use the spa. The high alkalinity can disrupt the natural balance of the body, leading to dry and itchy skin, red eyes, and other skin problems.

Cloudy Water

Cloudy water is one of the most common signs of high spa alkalinity. When the alkalinity is too high, the water becomes cloudy and hazy. This is due to the formation of scale or mineral deposits that make the water appear milky. The cloudy water is not only unattractive but can also cause skin irritation, making it important to address the issue as soon as possible.

To determine if the cloudy water is caused by high alkalinity, you can perform a simple test using a water testing kit. If the total alkalinity level is above 120 ppm, it indicates high alkalinity levels. A pH level between 7.2 and 7.8 is considered ideal for a spa, and levels above or below this range can also cause cloudy water.

To resolve the issue of cloudy water, you will need to lower the alkalinity levels in your spa. This can be done by using a pH decreaser or acid, following the manufacturer’s instructions for the product. It is important to retest the water after making adjustments to ensure the alkalinity and pH levels are within the appropriate range.

Scaling and Staining

Scaling is a buildup of mineral deposits on your spa’s surfaces, which can cause your spa to look unsightly and become difficult to clean. High alkalinity in spa water can cause scaling, which can lead to serious damage to your spa’s equipment over time. If left untreated, scaling can cause your spa’s heater to fail and require costly repairs.

Staining is another common problem caused by high alkalinity in spa water. Metals such as copper and iron can become oxidized and stain your spa’s surfaces, causing them to look unappealing. Stains can be difficult to remove and may require professional help.

Both scaling and staining can be prevented by regularly testing and adjusting the alkalinity levels in your spa. If you notice signs of scaling or staining, it’s important to take action quickly to prevent further damage to your spa.

Irritation to Skin and Eyes

High spa alkalinity can cause skin and eye irritation. When the alkalinity is too high, it can cause the water to become harsh and uncomfortable on the skin and eyes. This can lead to itching, rashes, and redness, as well as burning and stinging sensations.

The alkaline water can also cause dryness, which can exacerbate these symptoms. If you experience any of these symptoms, it is important to test your spa water’s alkalinity level and adjust it accordingly.

To prevent irritation, it is best to maintain the ideal alkalinity level for your spa. This will keep the water gentle on your skin and eyes, allowing you to enjoy your spa experience to the fullest.

Tips To Lower Spa Alkalinity

Use an alkalinity reducer: Alkalinity reducers such as sodium bisulfate or muriatic acid can be added to the spa water to lower the alkalinity levels. Follow the manufacturer’s instructions carefully.

Dilute with fresh water: Adding fresh water to the spa can dilute the alkalinity levels. Drain about one-third or half of the spa water and replace it with fresh water.

Aerate the water: Increasing the spa’s water circulation and aeration can help lower alkalinity levels by releasing carbon dioxide into the air. Turn on the spa jets or use a fountain or waterfall feature if your spa has one.

Test and adjust regularly: Test your spa’s water regularly using a test kit and adjust the alkalinity levels as needed to keep them in the appropriate range. Keeping the water balanced will help prevent issues with high alkalinity in the future.

Use pH Reducers

If you need to lower your spa’s alkalinity, a common solution is to use a pH reducer such as sodium bisulfate or muriatic acid. These products will lower both the pH and alkalinity levels. However, be cautious when handling these chemicals as they can be hazardous if not used properly. Follow the manufacturer’s instructions and wear protective gear such as gloves and goggles.

It’s also important to note that while pH reducers can effectively lower alkalinity, they can also cause the pH to drop too low if overused. This can lead to other water chemistry issues and potential damage to your spa equipment.

Test your spa water regularly and adjust the pH and alkalinity levels as needed. It’s better to make small adjustments over time rather than trying to correct a large imbalance all at once.

Add Acid To The Water

If your spa’s alkalinity levels are too high, adding an acid like muriatic acid can help to lower it. Here are a few tips to follow when adding acid to your spa:

  1. Test your spa water to determine the current pH level.
  2. Add small amounts of acid to your spa water at a time, then retest the pH level until it falls within the recommended range of 7.2 to 7.8.
  3. Do not add more acid than necessary, as this can cause the pH level to drop too low, leading to other water chemistry issues.

Keep in mind that adding acid to your spa can also lower its total alkalinity, so be sure to test both the pH and total alkalinity levels regularly and adjust as needed to maintain proper water balance.

Dilute Your Spa Water

One way to lower spa alkalinity is by diluting your spa water with fresh water. This method involves draining some of the water from your spa and refilling it with fresh water. This will reduce the concentration of alkaline substances in your spa water.

Consider using soft water: When refilling your spa with fresh water, it’s best to use soft water that has a low mineral content. Hard water can have a high alkalinity, which can make it difficult to balance your spa water chemistry.

Test your water: Before adding any chemicals to your spa, it’s important to test your water to determine the current pH and alkalinity levels. This will help you determine how much fresh water you need to add to dilute your spa water and bring it to the desired levels.

Monitor your spa: After diluting your spa water, monitor it regularly to ensure that the alkalinity and pH levels remain within the recommended range. You may need to add chemicals or adjust the water to maintain the proper balance.

Importance of Balanced Spa Water

Proper Chemical Balance: Balancing the chemicals in your spa water is essential for maintaining its cleanliness and safety. Improper balance can lead to a range of problems, including skin and eye irritation, cloudy water, and scaling.

Longevity of Equipment: Maintaining proper water balance can help extend the life of your spa equipment. Chemical imbalances can lead to corrosion, which can damage your spa’s components and shorten their lifespan.

Enjoyable Experience: Balanced water chemistry can provide a more enjoyable spa experience. Balanced water can help prevent skin and eye irritation and create clearer water, enhancing the visual appeal of your spa.

Cost Savings: Properly balanced spa water can save you money in the long run. Regular maintenance and water testing can help you identify and correct imbalances before they lead to more significant problems that require costly repairs.

Ensuring Optimal Performance of Sanitizers

Sanitizers are essential for keeping spa water clean and safe. To ensure they perform optimally, maintain proper water balance. High levels of calcium hardness, pH, and alkalinity can reduce sanitizer effectiveness.

Additionally, sanitize your spa water regularly. Shocking the spa water with a chlorine or non-chlorine shock treatment eliminates bacteria, algae, and other contaminants that can impair sanitizer performance.

Finally, replace your spa’s filter cartridge regularly. A dirty or clogged filter reduces water flow and can trap contaminants, making it difficult for sanitizers to reach and eliminate them.

Professional Help For Spa Maintenance

If you are unsure about how to properly maintain your spa, it may be a good idea to seek professional help.

Expert Knowledge: Professional spa maintenance technicians have extensive knowledge about how to properly maintain a spa. They can give you valuable advice on how to keep your spa clean, well-balanced and in good working order.

Saves Time and Effort: Maintaining a spa can be time-consuming and require a lot of effort. Hiring a professional can save you time and energy, allowing you to enjoy your spa without the hassle of maintenance.

Preventative Maintenance: Regular spa maintenance can help prevent major issues from occurring. By hiring a professional to perform regular maintenance, you can prevent costly repairs in the future.

Professional Equipment: Professional spa maintenance technicians have access to high-quality equipment that can clean and maintain your spa effectively. This equipment is often not available for purchase by consumers and can lead to better results in spa maintenance.

When to Call a Professional Spa Technician

  • No Improvement in Water Quality: If the water quality is not improving even after taking all the necessary steps, then it’s time to call a professional spa technician. They have the necessary tools and expertise to diagnose and treat the issue.

  • Electrical Problems: If there is an issue with the electrical components of the spa, it is best to call a professional technician. They have the necessary training and knowledge to handle the electrical components of a spa safely.

  • Major Repairs: If there are major repairs required, such as fixing leaks or replacing components, it’s best to leave it to the professionals. Attempting to do such repairs yourself can lead to more damage and even safety hazards.

If you are unsure about a problem or how to fix it, it’s always better to call a professional technician. They can help diagnose the issue and provide the necessary solutions, saving you time and money in the long run.

Frequently Asked Questions

What is spa alkalinity and why is it important?

Spa alkalinity refers to the level of alkaline substances in the water of a spa. It is important to maintain a proper alkalinity level to ensure the efficiency of the spa’s sanitizer and prevent corrosion of equipment.

How do you test spa alkalinity?

You can test spa alkalinity using test strips or a testing kit. Follow the instructions carefully and ensure the accuracy of the readings to determine the alkalinity level of your spa water.

What causes high spa alkalinity?

High spa alkalinity can be caused by several factors, such as the use of hard water, overuse of alkalinity increasers, or the accumulation of debris and contaminants in the water.

What are the effects of high spa alkalinity?

High spa alkalinity can cause skin and eye irritation, cloudy water, and reduced effectiveness of sanitizers. It can also lead to mineral buildup, clogged filters, and equipment damage if not addressed promptly.

How can you lower spa alkalinity?

You can lower spa alkalinity by adding pH reducers, using acid to adjust the pH level, diluting the spa water, or using specialized products designed to lower alkalinity levels. It is important to follow the instructions carefully and avoid over-correcting the alkalinity level.

When should you call a professional for high spa alkalinity?

If you are experiencing persistent high alkalinity levels despite your efforts to lower them, or if you are unsure about how to properly adjust the water chemistry, it may be time to call a professional spa technician. They can assess the situation, identify the underlying issue, and provide the necessary solutions to restore the balance of your spa water.

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