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Are Chemicals the Same for Pools and Spas?

Feb 01, 2021

“Are chemicals the same for pools and spas?” It’s a question that many pool and spa owners ask, and the query is certainly understandable. After all, chemicals for pools and spas are meant to do basically the same job. Comparing labels, you may even get a bigger sense that they are generally the same thing. However, making that assumption and using chemicals interchangeably won’t have the effect you desire.

In terms of chemicals, some pool and spa owners can mistakenly think of their spa as just a smaller version of their pool. This just isn’t the case. Pools and spas actually function quite differently, which is why their chemical needs are also quite distinct. If you own both a pool and spa, here are some details to consider.

Size Makes a Difference

Anyone can see that there is a large variance in size between a pool and a spa. This means that there is much more water in a pool than there is in a hot tub. Of course, this leads some spa and pool owners to believe that reducing the amount of pool chemicals for use in the hot tub should work just fine. The reality is that there is more to the equation than just that. Pool chemicals are typically more concentrated, as they are meant to go into a large body of water. They should not be added to a spa.

Warm vs. Cool Matters

Much like you, bacteria love a warm soak in the hot tub. Without proper chemicals, spa water can become unbalanced quite quickly. Most pool chemicals are created to remain stable up to around 80 degrees Fahrenheit. Spas can sometimes run around 15 to 20 degrees hotter than that, rendering pool chemicals ineffective. Using pool chemicals in a spa can rapidly cause chemical levels to get out of hand.

Circulation Makes a Difference

Those spa jets that soothe your aching muscles are also wonderful at circulating the water, and, consequently, the chemicals in your hot tub. When chemicals are rapidly mixing together, reactions happen more quickly. Pools, on the other hand, don’t have all this extra movement. The more highly-concentrated pool chemicals are made to work in water that has much less movement.

Water Loss

With its higher temperatures and swirling water, spas are prone to more evaporation than pools. This evaporation causes chemicals to become more concentrated. Having already-concentrated pool chemicals in the water causes levels to rapidly become imbalanced when the wrong chemicals are used.

Stick With the Tried and True

In short, using pool and spa chemicals interchangeably can easily lead to ownership issues. While the idea may seem like a money saver, it’s a much better plan to go with the proper chemicals for the situation. Sticking with products that are specifically made for the area you’re using them in is imperative. Your pool and spa’s health, and even your own health, will be better for it.

Narellan Pools has decades of experience to draw on. If you have pool and spa questions, we have answers for you. Call us today to talk about your new fiberglass pool and spa and all of the chemicals you’ll need to get started off on the right foot. With the perfect backyard space from Narellan Pools, you’ll enjoy each and every day in your own private oasis.

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