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Free Delivery On Orders Over $150, Excludes Oversized Items & Rural Deliveries
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Spa Treatments

Browse our range of spa pool and hot tub chemicals. Spa water chemistry differs from swimming pools due to smaller water volumes, higher temperatures, and more frequent use, making correct dosing and regular testing essential for safe, comfortable water.

Test your spa water regularly. High water temperatures accelerate chemical consumption. We recommend testing pH, alkalinity, and sanitiser levels at least twice per week, or before each use.

What's in this collection

  • Sanitisers. Chlorine and bromine-based sanitisers to keep spa water free of bacteria and contaminants.
  • pH balancers. pH increasers and decreasers to maintain the correct pH range of 7.2 to 7.6.
  • Alkalinity adjusters. Total alkalinity products to stabilise water chemistry and protect equipment.
  • Calcium adjusters. Calcium hardness products to prevent corrosion and scale build-up.
  • Clarifiers. Spa clarifiers to clear cloudy water and improve filter efficiency.
  • Pipe cleaners. Spa flush and pipe cleaning products to remove biofilm and residue from plumbing.
  • Specialty treatments. Simple Silver and other low-chlorine alternative treatments for sensitive users.
Not sure what your spa needs? Contact our team for water treatment advice tailored to your spa size, usage, and current water readings.

Filters

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Simple Silver 500g chemical-free spa pool sanitizer - silver ion tablet case, 12-month spa water treatment New Zealand Save $35.00 Save $0.00
$455.00
$455.00 - $455.00
$455.00
$420.00
$420.00 - $420.00
$420.00

Simple Silver Spa Pool Treatment 500g | Chemical-Free | 12-Months

in stock

Tired of juggling chlorine, bromine, pH adjusters, and shock treatments? Simple Silver replaces your entire spa chemical routine with a single 500g...

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$455.00
$455.00 - $455.00
$455.00
$420.00
$420.00 - $420.00
$420.00
Save $35.00 Save $0.00
Perfect Pools crystalline chlorine 10kg bucket with sodium dichlor pool sanitiser label on a white bucket against a light background Save $67.00 Save $0.00
$196.00
$196.00 - $196.00
$196.00
$129.00
$129.00 - $129.00
$129.00

Crystalline Chlorine 10kg | Sodium Di-Chlor | Pool & Spa Sanitizer

Only 1 left!

The best value chlorine for serious pool owners. Crystalline Chlorine 10kg is the bulk pail choice for NZ pool and spa owners who want crystal-clea...

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$196.00
$196.00 - $196.00
$196.00
$129.00
$129.00 - $129.00
$129.00
Save $67.00 Save $0.00
Perfect Pools water balancing range including crystalline chlorine, pH increaser, pH decrease, calcium hardness increaser and alkalinity increaser on a white background Save $79.00 Save $0.00
$179.00
$179.00 - $179.00
$179.00
$100.00
$100.00 - $100.00
$100.00

Spa Pool Starter Kit | 7-Piece Water Care Bundle

in stock

New spa pool? You need this first. The Perfect Pools Spa Pool Starter Kit gives you everything to balance and sanitise your spa from day one, no gu...

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$179.00
$179.00 - $179.00
$179.00
$100.00
$100.00 - $100.00
$100.00
Save $79.00 Save $0.00
White bucket of crystalline chlorine pool sanitiser with 'Perfect Pools' branding on a white background Save $2.70 Save $0.00
$22.50
$22.50 - $22.50
$22.50
$19.80
$19.80 - $19.80
$19.80

Crystalline Chlorine 1kg Pail | Sodium Di-Chlor Pool & Spa Sanitizer

in stock

Perfect for spas, top-ups, and trying Crystalline Chlorine for the first time. The 1kg pail of Crystalline Chlorine is the ideal entry size - fast-...

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$22.50
$22.50 - $22.50
$22.50
$19.80
$19.80 - $19.80
$19.80
Save $2.70 Save $0.00
Perfect Pools alkalinity increaser 10kg bucket with sodium bicarbonate pool balancer label on a white bucket, shown on a light background
Save $19.00 Save $0.00
$69.00
$69.00 - $69.00
$69.00
$50.00
$50.00 - $50.00
$50.00

Alkalinity Increaser Sodium Bicarbonate 10kg | Pool & Spa

in stock

The best value Total Alkalinity treatment for serious pool owners. Alkalinity Increaser 10kg is the bulk pail choice for NZ pool and spa owners who...

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$69.00
$69.00 - $69.00
$69.00
$50.00
$50.00 - $50.00
$50.00
Save $19.00 Save $0.00
White bucket of crystalline chlorine pool sanitizer with Perfect Pools label on a white background
Save $14.00 Save $0.00
$44.90
$44.90 - $44.90
$44.90
$30.90
$30.90 - $30.90
$30.90

Crystalline Chlorine 2kg Pail | Sodium Di-Chlor Pool & Spa Sanitizer

in stock

The ideal mid-size chlorine for regular pool and spa owners. Crystalline Chlorine 2kg is the sweet spot between the 1kg starter pail and the 4kg bu...

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$44.90
$44.90 - $44.90
$44.90
$30.90
$30.90 - $30.90
$30.90
Save $14.00 Save $0.00
Perfect Pools crystalline chlorine 4kg bucket with sodium dichlor pool sanitiser label on a white bucket against a light background
Save $15.10 Save $0.00
$80.00
$80.00 - $80.00
$80.00
$64.90
$64.90 - $64.90
$64.90

Crystalline Chlorine 4kg | Sodium Di-Chlor | Pool & Spa Sanitiser

in stock

The go-to chlorine for NZ pool and spa owners. Crystalline Chlorine is a fast-dissolving Sodium Di-Chlor granular sanitiser that keeps your pool or...

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$80.00
$80.00 - $80.00
$80.00
$64.90
$64.90 - $64.90
$64.90
Save $15.10 Save $0.00
Save $11.01 Save $0.00
$60.00
$60.00 - $60.00
$60.00
$48.99
$48.99 - $48.99
$48.99

Natural Mineral Purifier Spa Stick | Single | 4-Month Silver and Zinc Ion Treatment

in stock

What if you could cut your spa chlorine use by up to 50% and still have crystal-clear, bacteria-free water? The Natural Mineral Purifier Spa Stick ...

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$60.00
$60.00 - $60.00
$60.00
$48.99
$48.99 - $48.99
$48.99
Save $11.01 Save $0.00
Save $4.00 Save $0.00
$38.90
$38.90 - $38.90
$38.90
$34.90
$34.90 - $34.90
$34.90

Zodiac Spa Pipe Cleaner 500ml | Flush Spa Plumbing | Pre-Drain Treatment

in stock

Keep your spa's plumbing system clean and free-flowing with Zodiac Spa Pipe Cleaner. Used before each water change, it flushes oils, biofilm, and c...

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$38.90
$38.90 - $38.90
$38.90
$34.90
$34.90 - $34.90
$34.90
Save $4.00 Save $0.00
Save $84.00 Save $0.00
$239.00
$239.00 - $239.00
$239.00
$155.00
$155.00 - $155.00
$155.00

Natural Mineral Purifier Spa Stick | 4-Pack | 16 Months Protection

in stock

Enjoy crystal-clear spa water with the Natural Mineral Purifier Spa Stick 4-Pack. Using advanced mineral bed technology, these sticks automatically...

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$239.00
$239.00 - $239.00
$239.00
$155.00
$155.00 - $155.00
$155.00
Save $84.00 Save $0.00
Perfect Pools pH decrease 10kg bucket with sodium bisulphate pool balancer label on a white bucket against a light background
Save $12.10 Save $0.00
$79.00
$79.00 - $79.00
$79.00
$66.90
$66.90 - $66.90
$66.90

pH Decreaser Sodium Bisulphate 10kg | Pool & Spa pH Down

in stock

Maintain safe and balanced water chemistry in your swimming pool or spa pool with pH Decreaser (Sodium Bisulphate). When pH rises above 7.6, chlori...

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$79.00
$79.00 - $79.00
$79.00
$66.90
$66.90 - $66.90
$66.90
Save $12.10 Save $0.00
Perfect Pools Calcium Increaser 4kg white pail with purple label - pool and spa water hardness treatment NZ
Save $12.50 Save $0.00
$42.50
$42.50 - $42.50
$42.50
$30.00
$30.00 - $30.00
$30.00

Alkalinity Increaser Sodium Bicarbonate 4kg | Pool & Spa

in stock

pH swings driving you crazy? Alkalinity Increaser (Sodium Bicarbonate) is the essential buffer that keeps your pool or spa water stable, stopping p...

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$42.50
$42.50 - $42.50
$42.50
$30.00
$30.00 - $30.00
$30.00
Save $12.50 Save $0.00
Perfect Pools calcium increaser 10kg bucket with calcium chloride pool balancer label on a white bucket against a light background
Save $15.00 Save $0.00
$65.00
$65.00 - $65.00
$65.00
$50.00
$50.00 - $50.00
$50.00

Calcium Hardness Increaser 10kg | Calcium Chloride Pool & Spa

in stock

The best value calcium hardness treatment for serious pool owners. Calcium Hardness Increaser 10kg is the bulk pail choice for NZ pool and spa owne...

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$65.00
$65.00 - $65.00
$65.00
$50.00
$50.00 - $50.00
$50.00
Save $15.00 Save $0.00
Save $3.10 Save $0.00
$18.00
$18.00 - $18.00
$18.00
$14.90
$14.90 - $14.90
$14.90

Alkalinity Increaser Sodium Bicarbonate 1kg | Pool & Spa

in stock

pH swings making your pool or spa impossible to balance? Alkalinity Increaser (Sodium Bicarbonate) is the essential buffer that keeps your water st...

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$18.00
$18.00 - $18.00
$18.00
$14.90
$14.90 - $14.90
$14.90
Save $3.10 Save $0.00
Simple Silver 500g chemical-free spa pool sanitizer - silver ion tablet case, 12-month spa water treatment New Zealand
Save $59.00 Save $0.00
$699.00
$699.00 - $699.00
$699.00
$640.00
$640.00 - $640.00
$640.00

SimpleSilver Spa Pool Treatment 1kg | Chemical-Free | 12-Months

in stock

One tablet. Twelve months. Zero hassle. SimpleSilver keeps your spa water clean and clear without chlorine, bromine, or complicated maintenance rou...

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$699.00
$699.00 - $699.00
$699.00
$640.00
$640.00 - $640.00
$640.00
Save $59.00 Save $0.00
Perfect Pools calcium hardness increaser 1kg bucket with calcium chloride pool balancer label on a white bucket against a light background
Save $3.10 Save $0.00
$18.00
$18.00 - $18.00
$18.00
$14.90
$14.90 - $14.90
$14.90

Calcium Hardness Increaser 1kg | Calcium Chloride Spa & Pool

in stock

Soft water foaming up your spa or corroding your equipment? Calcium Hardness Increaser (Calcium Chloride) is the essential treatment that protects ...

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$18.00
$18.00 - $18.00
$18.00
$14.90
$14.90 - $14.90
$14.90
Save $3.10 Save $0.00
Perfect Pools pH Decreaser Sodium Bisulphate 4kg white pail with green label - pool and spa pH down NZ
Save $10.10 Save $0.00
$49.00
$49.00 - $49.00
$49.00
$38.90
$38.90 - $38.90
$38.90

pH Decreaser Sodium Bisulphate 4kg | Pool & Spa pH Down

in stock

pH creeping too high? pH Decreaser (Sodium Bisulphate) is the fast, reliable way to bring pH back into the ideal range in swimming pools and spa po...

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$49.00
$49.00 - $49.00
$49.00
$38.90
$38.90 - $38.90
$38.90
Save $10.10 Save $0.00
Perfect Pools Calcium Hardness Increaser 4kg white pail with orange label - calcium chloride pool and spa water balancer NZ
Save $16.50 Save $0.00
$49.00
$49.00 - $49.00
$49.00
$32.50
$32.50 - $32.50
$32.50

Calcium Hardness Increaser 4kg | Calcium Chloride Pool & Spa

in stock

Soft water silently destroying your spa or pool? Calcium Hardness Increaser (Calcium Chloride) is the essential treatment that protects your pool s...

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$49.00
$49.00 - $49.00
$49.00
$32.50
$32.50 - $32.50
$32.50
Save $16.50 Save $0.00
Save $10.00 Save $0.00
$39.90
$39.90 - $39.90
$39.90
$29.90
$29.90 - $29.90
$29.90

Spa Pool Floating Tablet Dispenser | 20g Tablets | Adjustable Flow

Only 5 left!

Maintain clean and balanced spa water effortlessly with the Spa Pool Floating Tablet Dispenser. Designed for 20g chlorine or bromine tablets, it fl...

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$39.90
$39.90 - $39.90
$39.90
$29.90
$29.90 - $29.90
$29.90
Save $10.00 Save $0.00