Where we mention Leisure Time E5 Spa 56 Chlorinating Granules for Spas and Hot Tubs, 5 lbs

• Hot Tub Startup: The First-Fill Protocol for New and Used Spas

  Editor's Pick · Best for: Fast-dissolving dichlor sanitizer for chlorine startup path, stabilized for spa temperatures.

• Spa vs Pool Chemistry: 7 Differences That Matter (2026 Guide)

  Default spa chlorine (dichlor) · Best for: Fast-dissolving dichlor granules that stay in range at 100-104°F without driving pH up like trichlor tabs do.