Skip to navigation Skip to content
The Hot Tub Company
×
  • 0330 107 12 85
  • My account
  • Cart
×
  • Home
  • Shop
  • Hot Tubs
    • ShoreRelax Hot Tub
    • ShoreRetreat Hot Tub
    • ShoreRecharge Hot Tub
    • Naples Hot Tub
    • Nice Hot Tub
    • Genoa Hot Tub
    • Monaco Hot Tub
    • Gibraltar Hot Tub
    • Amalfi Hot Tub
    • Palma Hot Tub
    • Valencia Hot Tub
    • Monterosso Hot Tub
  • Water Treatment
    • Alkalinity & Hardness
    • Bromine and Chlorine
    • pH Adjusting
    • Shock Treatment
    • Speciality Chemicals
    • Water Testing
    • Water Treatment Kits
  • Filters
  • Maintenance
  • Accessories
    • Fragrances
    • Booster Seats
    • Coverlifters
    • Games & Fun
    • Handrails
    • Glassware
    • Steps
    • Thermometers
    • Trays & Bars
    • Floating Thermal Covers
  • Spares
    • Air Blowers
    • Audio
    • Cabinet Spares
    • Covers
    • Drain Fittings
    • Filter Housings
    • Flow Switches
    • Fuses & RCDs
    • Heaters
    • Jets
    • Keypads & Overlays
    • Lights
    • Pillows
    • Plumbing (coming soon)
    • Pump Parts
    • Pumps
    • Sensors
    • Spaform Spares
    • Top Controls
    • UV Treatment & Ozone
  • Swimming Pool
    • Chlorine Tablets
    • Chlorine Granules
    • pH Adjusting
    • Water Testing
    • Algaecides, Flocculants & Clarifiers
    • Shock Treatment For Swimming Pools
    • Swimming Pool Maintenance
  • Help
    • Contact Us
    • How to Order
    • Delivery
    • Privacy Policy
  • Home
  • Contact Us
  • About Us
  • Blog
  • Hot Tubs
    • ShoreRelax Hot Tub
    • ShoreRetreat Hot Tub
    • ShoreRecharge Hot Tub
    • Naples 4 Seater Hot Tub
    • Genoa 3 Seater Hot Tub
    • Nice 6 Seater Round Hot Tub
    • Monaco 6 Seater Hot Tub
    • Gibraltar Twin Lounger 5 Seater Hot Tub
    • Amalfi 6 Seater Hot Tub
    • Capri Large 6 Seater Hot Tub
    • Barcelona Large 6 Seater Hot Tub
    • Palma Large 7 Seater Hot Tub
    • Valencia Large 6 Seater Hot Tub
    • Monterosso Large 8 Seater Hot Tub
  • Swimspas
    • Portofino Swim Spa
    • Messina Fitness Pool
    • Alassio Swimspa
  • Offers
  • Finance
  • Features & Benefits
    • The Benefits of Hydrotherapy
    • Benefits of Shoreline Hydrotherapy
    • Low Maintenance
    • Energy Efficient
    • Hydrotherapy Jets
    • ShoreHeat Heat Pump
  • Questions
    • Hot Tub Warranty
    • Hot Tub Ownership
    • Peace of Mind
    • Frequently Asked Questions
    • Customer Reviews
    • Money Back Guarantee
    • Pre-Delivery Guide
    • Recommend A Friend
  • Owners Area
    • Manuals
    • Trade-Ins
    • Repairs
    • Accessories
    • Parts
    • Chemicals
  • Shop
    • Water Treatment
      • Alkalinity & Hardness
      • Bromine and Chlorine
      • Fragrances
      • pH Adjusting
      • Shock Treatment
      • Speciality Chemicals
      • Water Testing
      • Water Treatment Kits
    • Hot Tub Filters
    • Hot Tub Filters
      • Privacy Policy
      • About The Hot Tub Company
      • How to Order
      • Delivery
    • Maintenance
    • Accessories
      • Bluetooth Speakers
      • Booster Seats
      • Coverlifters
      • Games & Fun
      • Handrails
      • Glassware
      • Steps
      • Thermometers
      • Trays & Bars
    • Spares
      • Audio
      • Air Blowers
      • Cabinet Spares
      • Control Packs
      • Covers
      • Drain Fittings
      • Flow Switches
      • Fuses & RCDs
      • Heaters
      • Jets
      • Keypads & Overlays
      • Lights
      • Pillows
      • Pump Parts
      • Sensors
      • Spaform Spares
      • Top Controls
      • Filter Housings
      • Ozone & UV Treatment
    • Swimming Pool
      • Chlorine Tablets
      • Algaecides, Flocculants & Clarifiers
      • Shock Treatment For Swimming Pools
      • Swimming Pool Maintenance
    • Store Info
  • Showroom
  • £0.00 0 items
Home > Store > Water Treatment > Alkalinity & Hardness

Alkalinity & Hardness

  • Aquaclear Calcium Hardness Increaser 1kg

    Aquaclear Calcium Hardness Increaser 1kg

    £11.00     Add to cart
  • Aquaclear Calcium Hardness Increaser 5kg

    Aquaclear Calcium Hardness Increaser 5kg

    £21.00     Add to cart
  • Aquaclear Total Alkalinity Increaser 1kg

    Aquaclear Total Alkalinity Increaser 1kg

    £11.00     Add to cart
  • Aquaclear Total Alkalinity Increaser 5kg

    Aquaclear Total Alkalinity Increaser 5kg

    £21.00     Add to cart
  • Aquaclear Scale Away (concentrated) 0.5ltr

    Aquaclear Scale Away (concentrated) 0.5ltr

    £21.00     Add to cart
Contact Details

Waterside Leisure UK Ltd
T/a The Hot Tub Company
3 Hayhill
Barrow Upon Soar
Loughborough
Leicestershire
LE12 8LD

Call Us On 0330 107 12 85

Quick Links
  • Shop
  • Showroom
  • Contact Us
  • Finance
  • Offers
  • Privacy Policy
  • Terms and Conditions
  • Complaints Procedure
  • Refund and Returns Policy
Customer Reviews

Like Us On Facebook
Loading...
© 2026, The Hot Tub Company - E & OEd
Waterside Leisure UK Ltd is authorised and regulated by the Financial Conduct Authority FRN 717763.
The Company is a credit broker not a lender and has facilities with a panel of lenders.
*All warranties are defined in The Shoreline Hydrotherapy™ Hot Tub Warranty Document.
Web Design -iceConnect
  • My Account
  • Search
    ×
  • Cart 0

GDPR Cookie Banner

We are using cookies to give you the best experience on our website.

You can find out more about which cookies we are using or switch them off in .

    The Hot Tub Company
    Powered by  GDPR Cookie Compliance (opens in a new tab)

    Privacy Overview

    This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.

    Strictly Necessary Cookies

    Strictly Necessary Cookie should be enabled at all times so that we can save your preferences for cookie settings.

    Analytics

    This website uses Google Analytics to collect anonymous information such as the number of visitors to the site, and the most popular pages.

    Keeping this cookie enabled helps us to improve our website.

    Marketing

    This website uses the following additional cookies:

    (List the cookies that you are using on the website here.)