Pool Bromine

Bromine is a popular sanitizer for hot tubs and spas, known for its stability in warm water and gentler scent compared to chlorine. It kills bacteria and algae while staying active longer—even after it reacts with contaminants.

Why It Matters

Hot water environments break down chlorine quickly, but bromine holds up. It remains effective at higher temperatures, and bromamines (its byproducts) retain sanitizing ability, unlike chloramines.

Recommended Levels

For bromine-sanitized water:

  • Hot tubs/spas: 3–5 ppm

  • Indoor pools (if using bromine): 3–5 ppm

Bromine is slower to activate but longer-lasting, making it ideal for warm, high-use environments.

Types of Bromine

  • Bromine Tablets – Slow-dissolving, used in floaters or brominators.

  • Sodium Bromide – Often used to establish a bromine bank in new water before adding tablets.

Tips for Managing Bromine

Use a shock treatment weekly to reactivate bromine and remove organic waste. Test water 2–3 times weekly, especially in hot tubs where bromine depletes faster under heavy use.

Takeaways

  • Bromine is ideal for spas and hot tubs due to heat stability.

  • It’s slower to work but remains active longer.

  • Regular shocking keeps bromine working effectively.

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