Here at Johnsons we offer a wide range of Hot Tub and Spa Chemicals and Accessories perfect for the upkeep and maintenance of your Hot Tub or Spa.
Express delivery £4.99 & FREE Express Delivery on all orders over £20.
Hot Tub & Spa Chemicals
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QuickviewSpa Chemical Starter Kit
ChemicalsEstimated Delivery Time: 2-3 Working Days (Free Delivery)Ideal for all Hot Tubs & Inflatable Hot Tubs (Lay-Z Spa)
Our Spa Chemical Starter Kit contains the following:- Chlorine Granules (500g)
- pH Plus (500g)
- pH & Alkalinity Reducer (750g)
- No Foam (500ml)
- Test Strips
£35.99£29.99£35.99£29.99 
QuickviewAquaChek Pool & Spa Test Strips
ChemicalsAquaChek 6-in-1 Spa Test Strips are the easiest and quickest way to test your spa or hot tub water for 6 different chemistries. It’s vital to make sure those chemistries are balanced in order to make sure your spa water is intact and on a healthy level.£10.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£10.99
QuickviewChlorine Granules 1kg
Chemicals£10.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99Spa Chlorine Granules are rapid dissolving and are specifically formulated to disinfect Spa and Hot Tub water, they have a minimal effect on the pH value of the water. Spa Stabilised Chlorine Granules are ideal for daily disinfection of the water.
£10.99
QuickviewChlorine Tablets (20g) 1kg
ChemicalsSpa Chlorine Mini Tablets are slow dissolving and specifically formulated for the disinfection of Spa and Hot Tub Water. These tablets should be dosed via a specific floating dispenser or an erosion feeder device.£15.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£15.99
QuickviewAlkalinity Increaser 1kg
ChemicalsSpa Alkalinity Increaser raises the Total Alkalinity reading and prevents fluctuations during pH adjustment. Alkalinity readings should be maintained between 80 – 150ppm.£6.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£6.99
QuickviewpH Plus 1kg
ChemicalsSpa pH Plus is used to increase the pH balance of the Spa / Hot Tub Water. The correct pH balance is critical to ensure bather comfort and to minimise damage to the fabric of the Spa / Hot Tub. The correct pH balance for Spa / Hot Tub water is 7.4 – 7.6£6.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£6.99
QuickviewNon Chlorine Oxy-Shock 1kg
ChemicalsUse Spa Non Chlorine Oxy-Shock on a weekly basis or after heavy use of the Spa or Hot Tub. This product will break down the organic contaminants and un-filterable waste sometimes found in the water which can result in unpleasant smells / odours and a reduction in bather comfort. Spa Non Chlorine Oxy-Shock can also improve the efficiency of the Bromine sanitiser.£16.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£16.99- Sale
QuickviewBrominate Granules 1kg
ChemicalsSpa Brominate Granules are rapid dissolving and are specifically blended to disinfect Spa and Hot Tub water. They can be used in addition to Bromine tablets for a quick boost in sanitiser readings or used on their own to provide a Total Bromine reading.FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£16.99£11.99£16.99£11.99 
QuickviewpH & Alkalinity Reducer 1.5kg
ChemicalsThe correct pH and Alkalinity balance is vital to ensure comfortable bathing conditions, maximum efficiency from the sanitiser and to help maintain the fabric of the spa and hot tub. The correct pH reading should be 7.4 – 7.6 and Total Alkalinity between 80 – 150ppm£8.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£8.99
QuickviewSpa Sparkle 1L
ChemicalsSpa Sparkle restores sparkling clarity to the water as the product allows small particles to combine together and removed via the filtration process (the cartridge filter).£11.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£11.99
QuickviewNo Foam 1L
ChemicalsSpa No Foam is specifically formulated to remove excessive and unsightly foaming.£11.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£11.99
QuickviewInstant Filter Cleaner 500ml
ChemicalsSpa Instant Filter Cleaner can be used on regular basis (ideally weekly) and offers a quick solution to cleaning Cartridge Filters. The unique “trace dye” shows where you have sprayed the product so that you can ensure complete coverage of the filter.£10.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£10.99
QuickviewScale Inhibitor 1L
ChemicalsSpa Scale Inhibitor is specifically formulated to remove minerals and dissolved metals from source water, if left un-treated they are likely to form scale deposits or stain spa and hot tub surfaces, internal pipework, fittings and equipment. Long term exposure to scale deposits can reduce water circulation, reduce efficiency of heaters and can be costly to rectify.£9.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£9.99
QuickviewSpa & Hot Tub Flush 500ml
ChemicalsSpa & Hot Tub Flush should be used before the water is de-commissioned / drained down (typically no longer than 12 weeks for domestic spas and hot tubs) although heavy use will require more frequent drain downs. This product is formulated to internally clean all the pipework and fittings and will also loosen biofilms which can provide an ideal environment for harmful viruses and bacteria to live.£11.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£11.99- Sale
QuickviewSpa Chemical Kit
ChemicalsEstimated Delivery Time: 2-3 Working Days (Free Delivery) Our Spa Starter Kit contains the following:- Chlorine Granules (1kg)
- pH Plus (1kg)
- pH & Alkalinity Reducer (1.5kg)
- No Foam (1L)
- AquaChek Pool & Spa Test Strips
£49.95£44.95£49.95£44.95 
QuickviewCartridge Cleaner 1L
ChemicalsSpa Cartridge Cleaner is a powerful blended cleaner specifically formulated to remove oils, minerals, organic matter and dirt from Cartridge Filters. These deposits clog the filter and reduce filter efficiency and water circulation. Spa Cartridge Cleaner removes these deposits and restores filter efficiency and the lifetime of the filter.£9.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£9.99- Sale
QuickviewBromine Tablets 1kg
ChemicalsSpa Bromine Tablets are a broad based biocide specifically formulated for the disinfection of Spa and Hot Tub Water. These tablets should be dosed via a specific floating dispenser or an erosion feeder device.FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£27.99£19.99£27.99£19.99 - Sale
QuickviewWaterline Cleaner 1L
ChemicalsSpa Waterline Cleaner has been specifically formulated to quickly breakdown deposits found on the fabric of the spa or hot tub. It is a non-abrasive product and is compatible with the water chemistry offering a fast but effective method of cleaning.FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£11.99£9.99£11.99£9.99 
QuickviewCalcium Hardness Increaser 1kg
ChemicalsThis product should be used to raise the calcium hardness levels in Spa and Hot Tub water. If there is insufficient levels of calcium in the water it may be difficult to balance the water and grout loss within tiled spas may occur.£8.99FREE Delivery on orders over £20
Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99£8.99
QuickviewChlorogene T25 Tablets 25g
ChemicalsEstimated Delivery Time: 3-5 Working Days Chlorogene T25 Tablets have been developed specifically for use as a highly effective anti-microbiological control. The tablets only release chlorine dioxide when in contact with water.£49.99£49.99
Hot Tub & Spa ACCESSORIES
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QuickviewCover EX™ Premium Hot Tub Cover Lifter
AccessoriesThe Cover Ex™ slides your spa cover effortlessly behind your spa and offers a sleek low-profile design. Fitting: As standard not included. If purchased alongside one of our hot tubs we will fit this Free of Charge. Shipping: Free Delivery£229.00£189.00£229.00£189.00 
£139.00
QuickviewTaupe Gazebo with Retractable Awning
AccessoriesThis versatile Gazebo offers shade and shelter for any garden party, BBQ or for those who enjoy relaxing in the bubbles of a hot tub all year round. Size: 3m x 3m Shipping: Free Delivery£299.00£299.00