Spa Chemicals & Spa Care

Premium Spa and Pool Chemicals for Optimal Relaxation

Keep your spa water clean, clear, and perfectly balanced with The Spa Shop’s high-quality spa chemicals. Our range includes:

  • Sanitisers: Effective solutions for safe, hygienic water.
  • Clarifiers: Achieve sparkling, crystal-clear water.
  • pH Balancers: Maintain the perfect water balance.
  • Shock Treatments: Quickly restore water quality.

Designed for all spa types, our products make maintenance easy and effective. Trust The Spa Shop for expert solutions to enhance your spa experience.

Shop now for fast delivery across New Zealand!

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  • bioguard-spa-sanitiser

    BioGuard Spa Sanitiser

    BioGuard Spa Sanitiser – The Spa Water Sanitiser You Can Trust Keep your spa water fresh and clear with BioGuard Spa Pool Sanitiser, the perfect solution for effective and reliable spa water sanitisation. This high-quality sanitiser works to eliminate bacteria and prevent algae growth,...
    From $35.00
    From $35.00
  • BioGuard_Armour

    BioGuard Armour

    BioGuard Armour – The Spa Pool Stain and Scale Remover You Can Trust Say goodbye to stubborn stains and scale build-up with BioGuard Armour, the ultimate solution for maintaining a clean and healthy spa pool. Hard water and mineral deposits can cause unsightly stains...
    From $48.00
    From $48.00
  • Freshwater Silver Ion Catridge

    FreshWater Mineral Spa Sanitizer- Continuous Silver Ion

    FreshWater Ag+ Continuous Silver Ion Sanitizer  Overview This FreshWater Sanitizer can help your spa look in tip-top shape at all times. The FreshWater Ag+ Continuous Silver Ion Cartridge helps keep spa water clean and crystal clear. What’s in the box  1 x FreshWater Ag+...
    $60.00
    $60.00
  • simplesilver500g

    Simple Silver

    Simple Silver 500g – The Eco-Friendly Water Balancer You Can Rely On Maintain pure, balanced, and eco-friendly spa water with Simple Silver. This powerful, silver ion-based treatment effectively keeps your spa water clean by eliminating harmful bacteria and preventing algae growth. As a sustainable...
    From $435.00
    From $435.00
  • freshwater5wayteststrips

    Freshwater 5-way Test Strips

    FreshWater 5-Way Test Strips – Reliable Spa Water Testing Made Simple Keep your spa or pool water clean, balanced, and safe with FreshWater 5-Way Test Strips. These easy-to-use water testing kits provide quick and accurate results, helping you maintain perfect water quality for a...
    $28.00
    $28.00
  • bioguardfilterrenew

    BioGuard Filter Renew (Spray Bottle)

    BioGuard Filter Renew – Effortless Spa Filter Cleaner Maintaining your spa filter is key to keeping your water clean and clear. BioGuard Filter Renew is the perfect solution for removing dirt, oils, and debris accumulate in your spa and pool filters. This powerful yet easy-to-use spray...
    $45.00
    $45.00
  • bioguardpurity

    BioGuard Purity

    BioGuard Purity – Powerful Spa Shock for Clean, Clear Water Ensure your spa water stays crystal clear with BioGuard Purity. This 50g sachet is designed to quickly eliminate organic contaminants, such as oils, lotions, and body waste, that can cloud the water and cause...
    From $8.00
    From $8.00
  • 303aerospaceprotectant

    303 Aerospace Protectant 473ml

    303 Aerospace Protectant – Ultimate UV Protection for Spa Cover Keep your spa cover in top condition with 303 Aerospace Protectant. This high-performance UV protectant spray is specially formulated to protect vinyl, rubber, plastic, and other materials from the harmful effects of the sun....
    $45.00
    $45.00
  • CW Pool & Spa Filter Cleaner 1L

    CW Pool & Spa Filter Cleaner 1L

    Maintain peak performance and extend the life of your spa or pool filter with Crystal Water Filter Cleaner. This highly effective cleaning solution is designed to remove stubborn dirt, oils, and scale buildup from filter cartridges, ensuring your filtration system works at maximum efficiency....
    $25.00
    $25.00
  • CW Bromine Tablets 1kg

    CW Bromine Tablets 1kg

    Maintain pristine water quality in your spa or pool with Bromine Tablets. Each 1kg container contains 40 tablets, each weighing 20 grams, providing a reliable and long-lasting source of bromine. This powerful sanitizer effectively eliminates bacteria, algae, and other contaminants, ensuring clean, safe water...
    $55.00
    $55.00
  • CW Spa Shoc Shot Pills 1kg

    CW Spa Shoc Shot Pills 1kg

    Revitalize your spa with Crystal Water Spa Shoc Shot, a powerful and fast-acting sanitizer designed to quickly restore water clarity and balance. This innovative product is formulated to deliver an immediate boost to your spa’s sanitation system, effectively neutralizing contaminants, removing impurities, and enhancing...
    $27.00
    $27.00
  • Cw Spa Brilliance 1Kg Chemicals

    CW Spa Brilliance 1kg

    ransform your spa experience with Spa Brilliance, a premium water treatment solution designed to enhance the clarity and quality of your spa water. This advanced formula works by removing impurities and contaminants, ensuring a sparkling clean and inviting spa. Spa Brilliance also helps to...
    $25.00
    $25.00
  • Spa Start Up Kit - Chlorine Chemicals

    CW Spa Start Up Kit - Chlorine

    Kickstart your spa experience with the Spa Start-Up Kit (Chlorine), a comprehensive solution designed to ensure your spa is perfectly balanced and ready for use. This all-in-one kit includes essential products to get your spa water clean, clear, and inviting from the very beginning....
    $110.00
    $110.00
  • Cw O2 Shock 1Kg Chemicals

    CW O2 Shock 1kg

    Crystal Water O2 Shock – The Chlorine-Free Solution for Sparkling Pool Water Elevate your pool care routine with Crystal Water O2 Shock, a premium non-chlorine oxidiser designed to keep your water fresh and inviting. This 2kg treatment effectively removes contaminants and organic waste, leaving...
    $39.00
    $39.00
  • freshwater-spa-salt-4-5kg

    Freshwater Spa Salt 4.5kg

    Freshwater Spa Salt – Premium Salt for Balanced Spa Water Care Transform your spa into a luxurious saltwater experience with Freshwater Spa Salt. Specially designed for use with the Freshwater Salt System, this premium 4.5kg spa salt ensures your spa water stays clean, clear,...
    $58.00
    $58.00
  • velvet

    BioGuard Velvet 1kg

    BioGuard Velvet – Premium Water Clarity and Softening Treatment for Spa Transform your spa into a haven of relaxation with BioGuard Velvet. This advanced water clarity treatment is specially formulated to enhance the quality of your spa water, making it feel softer, look clearer,...
    $49.00
    $49.00
  • Spa_Chlor

    CW SPA CHLOR 1KG

    Crystal Water Spa Chlor – Effective Sanitiser for Clean and Safe Spa Water Experience the ultimate in spa care with Crystal Water Spa Chlor, a powerful sanitiser designed to keep your spa water clean, balanced, and inviting. This advanced treatment effectively eliminates harmful bacteria...
    $29.00
    $29.00
  • swirlawaypipecleaner

    BioGuard Swirl Away Pipe Cleaner 500ml

    BioGuard Swirl Away – Powerful Spa Pipe Cleaner BioGuard Swirl Away is the ultimate solution for cleaning and maintaining the internal plumbing of your spa. Over time, spas can accumulate oils, lotions, body oils, and other contaminants in their pipework. As a result, it...
    $34.00
    $34.00
  • Crystal Clear General

    BioGuard Crystal Clear

    BioGuard Crystal Clear – Powerful Spa Water Clarifier BioGuard Crystal Clear is the ideal solution for achieving sparkling clean and clear spa water. Over time, spa water can become cloudy due to fine particles and impurities. This highly effective spa water clarifier works by...
    $35.00
    $35.00
  • Bio Guard Foam Go 500G General

    BioGuard Foam Go 500g

    BioGuard Foam Go – Effective Spa Foam Cleaner BioGuard Foam Go is the perfect solution for eliminating foam from your spa. Over time, spa water can become foamy due to oils, lotions, soaps, and other residues. It quickly breaks down and eliminates unwanted foam,...
    $45.00
    $45.00
  • Insta Test 4Plus Spa Chemicals

    Insta Test 4plus Spa

    Quickly and accurately monitor the water quality of your spa or pool with 4 Plus Insta Test Strips. These convenient strips provide instant results for key water parameters, including pH, chlorine, alkalinity, and calcium hardness. Designed for ease of use, they help you maintain...
    $35.00
    $35.00
  • FreshWater Instant Filter Cleaner

    FreshWater Instant Filter Cleaner

    FreshWater Instant Filter Cleaner extends filter life by removing oils, minerals and debris. Us monthly to keep filters in their best operating condition. This product is compatible with all sanitizers, including bromine, chlorine and biguanide. Directions: Remove filter element form filter housing and rinse...
    $36.00
    $36.00
  • Bio Guard Performance Up 500G General

    BioGuard Performance Up 500g

    BioGuard Performance Up BioGuard SPA Performance Up raises Total Alkalinity to help prevent equipment corrosion and surface damage and helps control the pH. Protects the pH from being influenced by factors such as rain, bather load and other chemical applications. Prevents corrosion of equipment....
    $19.00
    $19.00
  • Bio Guard Comfort Up 500G General

    BioGuard Comfort Up 500g

    BioGuard Comfort Up – pH Increaser for Spa Water BioGuard Comfort Up is a powerful pH increaser designed to raise the pH levels in your spa water. Ensuring optimal water balance and a more comfortable spa experience. Low pH levels can lead to corrosion...
    $14.00
    $14.00
  • bioguard-shield

    BioGuard Shield 450g

    BioGuard Shield – Enhance and Protect Your Spa Water BioGuard Shield is a premium spa care product that protects and enhances your spa water, making every soak more enjoyable. Formulated to condition your spa water, it prevents scale build-up, corrosion, and cloudy water, ensuring...
    $20.00
    $20.00
  • Bio Guard Aquality 750G General

    BioGuard Aquality 750g

    BioGuard Aquality – Premium Spa Water Conditioner BioGuard Aquality is a high-quality water conditioner designed to improve the clarity and feel of your spa water. This advanced formula enhances water softness and ensures a more comfortable and luxurious soaking experience. It also helps balance...
    $24.00
    $24.00
  • Spacare Leak Sealer 500Ml General

    Spacare Leak Sealer 500ml

    Fix small leaks in your spa, swim spa, or hot tub with SpaCare Leak Sealer. This powerful formula is designed to seal minor leaks in plumbing and equipment, saving you time and costly repairs. Easy to use, it quickly seals and repairs small cracks...
    $35.00
    $35.00
  • Cw Calcium Hardener 750Gm Chemicals

    CW Calcium Hardener 750g

    CALCIUM HARDENER (Calcium Chloride)Total water hardness refers to the amount of calcium and magnesium carbonate in the water. If too low CH can cause etching of plaster and metal corrosion. High CH causes scale formation marble discolouration and cloudy water. Available Size Options: 25kg...
    $19.00
    $19.00
  • Frog Bromine Cartridge Chemicals

    Frog Bromine Cartridge 150g

    The SPA FROG® In-Line System enhances a standard hot tub up to 600 gallons with its patented delivery of minerals and a low dose of bromine. This hot tub Fresh Mineral Water® system eliminates the need for daily maintenance & chlorination, improves spa water quality and removes the unmistakable smell of chlorine, all the while...
    $40.00
    $40.00
  • fw-ph-up

    Freshwater pH/Alkalinity Up 680g

    FreshWater pH / Alkalinity Up – The Ideal Solution for Pool Water Balance Keep your spa or pool water perfectly balanced with FreshWater pH / Alkalinity Up. This 680g formula is designed to safely raise both pH and alkalinity levels, ensuring your water stays...
    $26.00
    $26.00
  • Freshwater Salt Test Strips Chemicals

    Freshwater Salt Test Strips

    Freshwater Salt Test Strips These Test Strips are designed for HotSprings ACE Salt Water Sanitizing system. Measure amount of Salt in the spa. 25 Test Strips.
    $24.00
    $24.00
  • CW No Foam 1L

    CW No Foam 1L

    No Foam eliminates and prevents foam build up in spas, hot tubs, whirlpools, ornamental pools and fountains or wherever foaming may be a problem. Directions for use; - ALWAYS SHAKE FIRST, ensure spa is running when applying. Prevention of Foam add 20mls per fortnight...
    $36.00
    $36.00
  • Cw Ph Increase 1Kg Chemicals

    CW PH Increase 1kg

    (Soda Ash) Neutral water has a pH of 7.0. A pH reading below 7.0 indicates the water is acidic and a reading above 7.0 indicates the water is alkaline. Available Size Options: 1kg . 2kg . 4.5kg . 25kg . 
    $19.00
    $19.00
  • Aquachek Spa Test Strips 6-In-1 General

    Aquachek Spa Test Strips 6-IN-1

    Total Chlorine  Free Chlorine  Total Bromine  Total Alkalinity  Total Hardness  PH 50 Test Strips 
    $32.00
    $32.00
  • Cw Ph Buffer 1Kg Chemicals

    CW PH Buffer 1kg

    (Sodium Bicarbonate) Low Total Alkalinity (TA) levels can lead to corrosion & staining also making it difficult to control sudden changes in pH. High TA levels can cause cloudiness eye irritation & scale. 
    $19.00
    $19.00
  • hotspringspachlorine

    Freshwater Concentrated Chlorine Granules 907g

    FreshWater Concentrated Chlorine Granules – Powerful Sanitisation for Sparkling Spa Water Keep your spa water crystal clear and hygienic with FreshWater Concentrated Chlorine Granules. This high-quality chlorine sanitiser is designed to eliminate bacteria, algae, and other contaminants, ensuring your spa remains safe and inviting....
    $65.00
    $65.00
  • Spa Start Up Kit - Bromine Chemicals

    CW Spa Start Up Kit - Bromine

    Crystal Water Spa start up kit is designed for easy convenience with all the products in one box for your initial spa treatment. The kit contains: 800g Bromine 1kg pH decrease 1kg pH buffer 750g Calcium Hardener Aquacheck 3 in 1 pool and spa...
    $120.00
    $120.00
  • Cw Ph Decrease 1Kg Chemicals

    CW PH Decrease 1kg

    (Sodium Bisulphate) Neutral water has a pH of 7.0. A pH reading below 7.0 indicates the water is acidic and a reading above 7.0 indicates the water is alkaline.
    $19.00
    $19.00
  • Freshwater Stain and Scale 473ml

    Freshwater Stain and Scale 473ml

    Stain and Scale Defense  Prevents calcium buildup and spa surfaces Eliminates iron and other metallic staining in spas
    $28.00
    $28.00
  • swimclear1kg

    BioGuard Swim Clear

    Swim Clear is a completely soluble stabilised granular chlorinating product suitable for both regular sanitation and shocking  Completely and instantly soluble leaving no residual  Will not cloud water  Excellent for sanitising small above ground pools  Concentrated so you use less Minial impact on water...
    From $35.00
    From $35.00
  • Pipe Cleaner 500Ml Chemicals

    CW Pipe Cleaner 500ml

    Pipe cleaner for spas, spa baths and hot tubs 
    $26.00
    $26.00
  • Bio Guard Perfect Balance 1L General

    BioGuard Perfect Balance 1L

    BioGuard Perfect Balance – Maintain Stable and Balanced Spa Water BioGuard Perfect Balance is a premium water balancer designed to stabilise and maintain the ideal water chemistry in your spa. Its advanced formula works to control pH and alkalinity levels, preventing fluctuations that can cause...
    $72.00
    $72.00
  • Aquachek Test Strips Yellow 4:1 (50 In Bottle) Chemicals

    Aquachek Test Strips Yellow 4:1

    Aquachek 4 Way Test - Free Chlorine PH Total Alkalinity Cyanuric Acid. 50 Test Strips 
    $30.00
    $30.00
  • Bio Guard Symmetry 750G General

    BioGuard Symmetry

    BioGuard Symmetry – Reliable Spa Bromine Tablet BioGuard Symmetry are an effective and easy-to-use Bromine Tablet for keeping your spa water clean, clear, and safe. Specially formulated for hot tubs and spas, these slow-dissolving tablets provide consistent sanitisation by eliminating bacteria and other contaminants....
    From $49.00
    From $49.00
  • fw-ph-down

    Freshwater pH/Alkalinity Down 680g

    FreshWater pH / Alkalinity Down – Dual Action Solution for Perfect Spa Water Balance Achieve the ideal water chemistry with FreshWater pH / Alkalinity Down. This 680g product is specially formulated to lower both the pH and alkalinity levels in your spa. Helping you...
    $28.00
    $28.00
  • Cw Spa Chlor 2Kg Chemicals

    CW Spa Chlor 2kg

    Stabilised Chlorine Granules (Dichlor) - direct addition no pre-dissolve required   Available Size Options: 1kg . 2kg 
    $52.00
    $52.00
  • Aquachek Test Strips Gold 7:1 Refill Chemicals

    Aquachek Test Strips Gold 7:1 Refill

    Aquachek 7 Way Test - Total Bromine Total Chlorine Free Chlorine Calcium Hardener PH Total Alkalinity Cyanuric Acid 50 in Bottle
    $40.00
    $40.00
  • Freshwater Cover Shield General

    Freshwater Cover Shield 473ml

    Freshwater Cover Shield from Hot Spring Spas cleans, shines, and protects your vinyl spa cover surface. Cleans, shines and protects vinyl cover surfaces Repels water, dust and dirt Forms a protective shield on your vinyl spa cover Helps resists fading, stains and dirt Repeated...
    $45.00
    $45.00
  • Bio Guard Filter Brite 250G General

    BioGuard Filter Brite 250g

    BioGuard Filter Brite – Deep-Cleaning Cartridge Filter Cleaner Keep your spa or hot tub running at peak performanc