Discover the Power of 85 X 85 X 32 Spa: How Many Gallons Can it Hold?

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If you’re the lucky owner of an 85 X 85 X 32 spa, you know just how relaxing and rejuvenating a soak can be. But have you ever wondered how many gallons of water your spa can hold? Knowing the capacity of your spa is not only important for maintaining proper water balance and chemical levels, but also for maximizing your overall spa experience.

The answer to the question “how many gallons can an 85 X 85 X 32 spa hold?” may surprise you. While the size of your spa is a factor in determining its capacity, there are other variables that come into play. Factors such as the depth of your spa, the shape of your spa, and even the placement of your spa can affect its overall water capacity.

So, what is the exact gallon capacity of an 85 X 85 X 32 spa? In this article, we’ll dive into the science behind calculating spa volume and explore the benefits of properly maintaining your spa’s water capacity. We’ll also help you determine the ideal water level for your spa and provide tips for choosing the right spa size for your lifestyle and budget.

Get ready to discover the power of your 85 X 85 X 32 spa and take your soaking experience to the next level. Keep reading to learn everything you need to know about spa capacity.

Unleashing the Potential of Your Spa: Understanding Its Capacity

Spas are the ultimate relaxation and rejuvenation haven. Owning one is a luxury and a responsibility, and it’s essential to understand its capacity to make the most of your investment. Capacity is the maximum amount of water your spa can hold, and it affects how many people can use it at once and how much water and chemicals are needed. In this post, we’ll explore the different factors that determine your spa’s capacity, so you can unleash its full potential and enjoy it to the fullest.

Factors That Affect Your Spa’s Capacity

  • Size: The size of your spa is a critical factor in determining its capacity. A larger spa will naturally hold more water than a smaller one.
  • Shape: The shape of your spa also plays a role. A circular spa will hold less water than a rectangular one of the same size, as the corners of a square or rectangular spa increase the water volume.
  • Height: The height of your spa walls will also impact its capacity. The taller the walls, the more water they can hold.

Determining Your Spa’s Capacity

Now that you know the factors that affect your spa’s capacity, how can you determine it? The easiest way is to consult your spa’s manual, which should provide the maximum capacity in gallons. However, if you don’t have the manual, you can still determine your spa’s capacity by calculating the water volume. The formula for calculating water volume is:

Water Volume (in gallons) = (Length x Width x Average Depth) x 7.5

Once you’ve determined your spa’s capacity, you can make informed decisions about how many people can comfortably use it, how much water and chemicals are needed, and how often to drain and refill it.

The Bottom Line

Understanding your spa’s capacity is essential to unleash its full potential. By considering the size, shape, and height, and using the formula for calculating water volume, you can determine your spa’s maximum capacity and make informed decisions to ensure it runs smoothly and provides the ultimate relaxation and rejuvenation experience. So, whether you’re a new spa owner or a seasoned one, take the time to understand your spa’s capacity and enjoy it to the fullest!

Is Size the Only Factor That Determines Your Spa’s Capacity?

When it comes to spa capacity, many people assume that size is the only factor that matters. However, there are other elements that can impact the amount of water your spa can hold. It’s essential to understand these factors to get the most out of your spa experience.

One of the key factors that determine a spa’s capacity is the depth of the spa. A deeper spa can hold more water than a shallower one of the same size. The material that the spa is made of can also affect its capacity. For example, an acrylic spa can hold more water than a wooden one of the same size.


  • Water Capacity: A spa with a depth of 40 inches can hold about 400 gallons of water.
  • Shallow Spas: Spas that are less than 30 inches deep are considered shallow and typically hold around 200-300 gallons of water.
  • Deep Spas: Spas that are 40 inches or deeper can hold up to 600 gallons of water.


Acrylic: An acrylic spa can hold more water than a wooden spa of the same size. This is because the material is denser and can handle more weight. Acrylic spas are also more durable and easier to maintain than wooden spas.

Wooden: Wooden spas are typically made from cedar, redwood, or teak. They have a natural look and feel that many people find appealing. However, they are less durable than acrylic spas and require more maintenance to keep them in good condition.

Other Factors That Can Affect Spa Capacity

  • Number of Jets: The more jets a spa has, the more water it will require to operate.
  • Occupancy: The number of people in a spa can also affect its water capacity. The more people in the spa, the less water it can hold.
  • Pump Power: A spa with a more powerful pump can circulate water more efficiently, which can impact its overall water capacity.

As you can see, size is not the only factor that determines your spa’s capacity. Understanding these other elements can help you choose the right spa for your needs and get the most out of your spa experience.

The Science Behind Calculating the Volume of Your Spa

Understanding the volume of your spa is crucial in maintaining its water chemistry and ensuring that your spa functions efficiently. Calculating the volume of your spa can help you determine the amount of chemicals required to keep it clean, the amount of water needed to fill it, and the amount of energy required to heat it up.

So, how do you calculate the volume of your spa? It’s simple. You just need to measure the length, width, and depth of your spa and use a mathematical formula to calculate the volume.

Measuring Your Spa

Before you can calculate the volume of your spa, you need to measure its dimensions. Use a tape measure or ruler to measure the length, width, and depth of your spa.

When measuring the depth, be sure to measure from the highest point of the spa to the lowest point. Some spas may have different depths in different areas, so it’s important to measure multiple areas to get an accurate average.

Calculating the Volume

Once you have measured the length, width, and depth of your spa, you can use the mathematical formula to calculate the volume. The formula is:

  • Rectangular or square spas: Volume = Length x Width x Depth
  • Round spas: Volume = (Diameter x Diameter x Depth) x 0.785
  • Irregularly shaped spas: Divide the spa into smaller, regular shapes and use the appropriate formula for each shape. Add the volumes of each shape together to get the total volume.

By understanding the science behind calculating the volume of your spa, you can keep your spa running smoothly and enjoy a clean, relaxing soak whenever you want.

Maximizing Your Spa Experience: Knowing the Ideal Water Level

One of the keys to a great spa experience is having the right water level. Not only does this affect the comfort of your spa, but it also has an impact on the effectiveness of your chemicals and your spa’s energy efficiency.

So, what is the ideal water level for your spa? The answer depends on several factors including the size and shape of your spa, the number of people using it, and the type of jets and pumps you have. However, a good rule of thumb is to aim for a water level that is about halfway up the skimmer opening.

Factors That Affect Your Spa’s Water Level

  • Spa Size: Larger spas generally require a higher water level than smaller spas.
  • Number of Users: The more people using the spa, the higher the water level should be to accommodate everyone comfortably.
  • Type of Jets and Pumps: Some jets and pumps require a higher water level to function effectively.

The Importance of Proper Water Level

Keeping your spa’s water level at the appropriate height is crucial for several reasons. First and foremost, it affects your comfort level. If the water level is too low, you may find yourself sitting on the bottom of the spa instead of being buoyant, which can be uncomfortable. Conversely, if the water level is too high, you may not be able to fully submerge yourself in the water.

Proper water level also impacts the effectiveness of your spa’s chemicals. If the water level is too low, your chemicals may not be distributed evenly throughout the spa, leading to inconsistent water quality. On the other hand, if the water level is too high, you may be diluting your chemicals too much, making them less effective.

How to Adjust Your Water Level

If you find that your spa’s water level is not at the ideal height, there are a few steps you can take to adjust it. First, turn off your spa’s pump and remove the skimmer basket. Then, use a garden hose to add water to the spa until it reaches the desired level. Finally, replace the skimmer basket and turn the pump back on to circulate the water.

Alternatively, if you need to lower the water level, you can use a submersible pump to drain the water until it reaches the desired height.

By keeping your spa’s water level at the appropriate height, you can enjoy a more comfortable and effective spa experience. Be sure to monitor your water level regularly and make adjustments as needed to get the most out of your spa.

The Benefits of Properly Maintaining Your Spa’s Water Capacity

Regular maintenance of your spa’s water capacity ensures it is always at its best. Maintaining your spa water‘s capacity comes with numerous benefits, including:

Prevents bacterial growth: A poorly maintained spa can harbor bacteria and other pathogens, which can cause health issues. Regular water maintenance ensures that bacteria and other contaminants are kept in check, making your spa safe and enjoyable to use.

Increases longevity: Properly maintained spa water ensures that the spa components are not subjected to damage caused by chemicals, debris, or clogs. This helps to increase the longevity of your spa and reduces the risk of expensive repairs or replacements.

What Are The Consequences of Neglecting Your Spa’s Water Capacity?

Neglecting your spa’s water capacity can lead to various consequences, including:

  • Corrosion: Unbalanced pH levels and high calcium hardness can lead to corrosion, which can damage the spa’s components.
  • Inadequate sanitation: Dirty water can cause infections and illnesses, especially if it is left untreated for long periods.
  • Poor water quality: Neglected water can become cloudy and discolored, which can affect the spa’s aesthetics and overall experience.

How Can You Maintain Your Spa’s Water Capacity?

To ensure that your spa’s water capacity is always at its best, it is essential to follow these maintenance tips:

  • Regular cleaning: Clean the spa filter regularly and remove debris from the spa’s surface to prevent clogging.
  • Check chemical levels: Test the pH and chlorine levels of your spa’s water regularly to ensure it is balanced and safe for use.
  • Drain and refill: Drain and refill your spa’s water every three to four months to prevent build-up of contaminants and ensure that the water is fresh.

Conclusion: Properly maintaining your spa’s water capacity is crucial for its longevity, safety, and overall enjoyment. By following these tips, you can ensure that your spa’s water is always at its best and ready for use.

Choosing the Right Spa Size for Your Lifestyle and Budget

If you’re considering investing in a spa, choosing the right size for your needs is crucial.

Size: The size of the spa will depend on several factors, including how many people will use it, how often it will be used, and the amount of space you have available. A small 2-3 person spa is perfect for couples or small families, while a larger 6-7 person spa is ideal for bigger groups or those who enjoy hosting social gatherings.


  • Budget: The cost of a spa will also depend on its size. Larger spas are typically more expensive, but there are many affordable options available.
  • Maintenance: It’s important to consider the long-term costs associated with spa ownership, such as maintenance and repair costs. A larger spa may require more maintenance, but the added cost may be worth it if you plan on using it frequently.


Entertaining: If you love hosting parties and gatherings, a larger spa may be the perfect addition to your backyard. A larger spa can accommodate more people and provide a great entertainment space.

Relaxation: If you’re looking for a spa primarily for relaxation purposes, a smaller spa may be more suitable for you. It can provide a more intimate and calming atmosphere for solo soaks or couple time.

Ultimately, the decision of choosing the right spa size for your lifestyle and budget is a personal one. Consider your needs, preferences, and budget before making your purchase to ensure you get the best spa for your lifestyle.

Frequently Asked Questions

How many gallons does an 85 X 85 X 32 spa hold?

An 85 X 85 X 32 spa can hold around 400-500 gallons of water depending on the shape, depth, and actual water capacity of the spa model. It is important to check the manufacturer’s specifications or owner’s manual for the exact water capacity of the spa to ensure proper maintenance and chemical balance.

What factors affect the water capacity of a spa?

The water capacity of a spa is affected by various factors including the shape, depth, and size of the spa, as well as the amount of space taken up by the seats, jets, and other features. The actual water capacity may also be influenced by the type of insulation, plumbing, and filtration system used.

How much water should I add to my spa?

The amount of water you should add to your spa depends on the manufacturer’s specifications and the actual water capacity of the spa. Generally, the water level should be at the recommended level marked by the manufacturer or within the skimmer opening. Do not overfill the spa as it may cause water to overflow and damage the surrounding area.

How often should I change the water in my spa?

The water in your spa should be changed every 3-4 months or as needed depending on the frequency of use, water quality, and maintenance routine. Draining and refilling the water can help remove built-up contaminants and minerals that may affect the water chemistry and overall performance of the spa.

What chemicals do I need to maintain my spa’s water?

Some essential chemicals for maintaining a spa’s water include chlorine or bromine, pH balancers, alkalinity increasers or decreasers, and shock treatments. These chemicals can help maintain the water’s cleanliness, balance, and clarity, as well as prevent the growth of bacteria and other harmful microorganisms. It is important to use the right amount and type of chemicals according to the manufacturer’s instructions and local regulations.

What can I do to keep my spa’s water clean and clear?

To keep your spa’s water clean and clear, you should maintain proper water chemistry and balance, clean the filter regularly, and follow a regular maintenance routine. You should also avoid using lotions, oils, and other personal care products in the spa, as they can leave residue and clog the filter. Using a cover when the spa is not in use can also help reduce debris and minimize water evaporation.

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