Blissful Oasis

Which is better: Bromine vs Chlorine

Your Bullfrog hot tub is ready to go and you’re probably a little baffled on how to chemically maintain your water. You’re not alone- there are a ton of choices on how to keep bacteria and contaminants out of your spa. Two of the most popular choices are chlorine and bromine. We’re here to help you decode the chlorine vs bromine system, regardless of what kind, brand or style hot tub you have.

Pros and Cons of Bromine

Bromine may be a little more expensive, it does a much better job of killing algae, bacteria and other contaminants for a much longer time. It’s especially great in warm water environments- perfect for a hot hot tub! Of all contaminants, Bromine does a really great job of destroying bacteria and viruses. The pH of Bromine is much lower than chlorine, meaning you won’t have the same chemical balance issues that you get with chlorine. There’s also lack of a strong chemical smell to it, unlike chlorine. Although Bromine still can cause skin irritation, it’s much easier on skin when compared to Chlorine.

  • Pros:
    • Extremely effective
    • Stable in hot water
    • Less chance of skin irritation
    • Less smell
  • Cons:
    • Can cost more than chlorine

Pros and Cons of Chlorine

Chlorine is fast acting and effective. If you’re looking to clean your hot tub fast, don’t plan on heating your spa over 99°F and don’t want to spend too much time on maintenance, chlorine is the way to go. Chlorine isn’t broken down as fast by the sun as bromine, however, most hot tubs aren’t necessarily in direct sunlight all day so this typically isn’t an issue. Chlorine has a high pH, meaning you will have to test and balance your spa water regularly (about twice a week). Chlorine can cause irritation to people with sensitive skin and comes with a pretty potent familiar chemical smell.

  • Pros:
    • Extremely effective
    • Fast-acting
  • Cons:
    • Not as effective in water temperatures over 99°F
    • May cause skin irritation
    • Recognizable smell
    • High pH
    • Not recommend for spa use in a tablet form

Which to Choose:

Every spa owner is different, and your personal preferences may gear you towards which you want to choose. We typically like to recommend Bromine as the pros far outweigh the cons. You can get Bromine in a powder or tablet form, which offers different ways to add Bromine to your hot tub. No matter which you choose, they both are a great option to kill contaminants and bacteria!

The absence of Chlorine Tabs (for Spas)

You’ll notice recognizable and reputable chemical manufactures don’t offer Chlorine tabs for spas. The reason being all chlorine tabs (unless they are calcium-based tabs) add stabilizer to your water- constantly! The stabilizer or cyanuric acid level will continuously increase with dedicated use of Chlorine Tabs, and high stabilizer levels cause chlorine to become less effective. We recommend not using a chlorine tab of any kind in your spa.