Chemicals

Hot Tub, Swim Spa & Pool Chemicals FAQs

• What chemicals do I need for my hot tub?

  To keep your hot tub water clean, safe, and balanced, you’ll need:

  • Chlorine or Bromine – Kills bacteria and keeps water sanitized.
  • Water balance products – Adjusts pH, alkalinity, and calcium hardness.
  • Shock treatments – Breaks down organic contaminants.
  • Algaecide & clarifiers – Prevents algae and keeps water clear.
  • Foam reducers & water conditioners – Helps maintain a smooth, clear water surface.
• Should I use chlorine or bromine in my hot tub?

  Both chlorine and bromine are effective sanitizers.

  • Chlorine – Fast-acting, great for high use, and ideal for hot tubs that are used frequently.
  • Bromine – Works better in hotter water, is gentler on skin, and lasts longer between doses.
• How often should I add chemicals to my hot tub?
  • Sanitiser (Chlorine/Bromine): Daily or as needed to maintain proper levels.
  • pH & Alkalinity Adjusters: Once a week or when needed.
  • Shock Treatments: Once a week or after heavy use.
  • Water Clarifiers & Foam Reducers: As needed when water looks cloudy or foamy.
• How do I test my hot tub water?

  Use a hot tub water test kit or test strips to check pH, alkalinity, chlorine/bromine, and calcium hardness. Adjust as needed to maintain balanced water chemistry.

• What causes hot tub water to turn cloudy or foamy?

  Cloudy or foamy water is usually caused by:

  • High levels of contaminants (oils, lotions, sweat).
  • Unbalanced pH and alkalinity.
  • Dirty or clogged filters.
  • Low sanitizer levels.
  • Using non-hot tub friendly soaps or detergents.

  To fix this, use a clarifier or foam reducer and check your water balance.

• How do I get rid of algae in my hot tub or pool?

  Use an algaecide and shock your hot tub with chlorine or bromine. Scrub any visible algae from the surfaces and keep your sanitizer levels correct to prevent future growth.

• Can I use household bleach instead of chlorine in my hot tub?

  No, household bleach is not designed for hot tub water. It lacks stabilisers and can damage your hot tub components. Always use hot tub-approved chlorine or bromine.

• How often should I shock my hot tub?

  Shock your hot tub once a week or after heavy use to remove organic waste and refresh the sanitizer. If the water is cloudy or has an unpleasant odor, a shock treatment can help.

• Can I mix chlorine and bromine in my hot tub?

  No, never mix chlorine and bromine as this can cause a dangerous chemical reaction. Stick to one type of sanitizer.

• Where can I buy hot tub chemicals with fast UK delivery?

  You can find a full range of hot tub chemicals at Wizard Hot Tubs, with fast UK delivery and expert advice.