Hot Tub & Spa Chemicals & Accessories

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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  • Sale
    £7.98

    Johnsons 6-in-1 Pool & Hot Tub Test Strips

    Johnsons 6-in-1 Pool & Hot Tub 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. Estimated Delivery Time: 2-3 Working Days
    £7.98
    £7.98
  • Sale
    £13.98

    Chlorine Tablets (20g) 1kg

    Spa 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £13.98
    £13.98
  • £16.99

    Non Chlorine Oxy-Shock 1kg

    Use 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £16.99
    £16.99
  • £10.99

    Chlorine Granules 1kg

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99

    Spa 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
    £10.99
  • Sale
    £6.98

    Johnsons 4-in-1 Chlorine Test Strips

    Johnsons 4-in-1 Chlorine Pool & Hot Tub Test Strips are the easiest and quickest way to test your spa or hot tub water for 4 different chemistries. Estimated Delivery Time: 2-3 Working Days
    £6.98
    £6.98
  • £11.99

    Brominate Granules 1kg

    Spa 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
    £11.99
    £11.99
  • Alkalinity Increaser 1kg

    Spa Alkalinity Increaser raises the Total Alkalinity reading and prevents fluctuations during pH adjustment. Alkalinity readings should be maintained between 80 – 150ppm.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £6.99
  • pH Plus 1kg

    Spa 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

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £6.99
  • £11.99

    Spa Sparkle 1L Water Clarifier

    Spa Sparkle ( Water Clarifier)  restores sparkling clarity to the water as the product allows small particles to combine together and removed via the filtration process (the cartridge filter).

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £11.99
    £11.99
  • pH & Alkalinity Reducer 1.5kg

    The 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

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £8.99
  • Sale
    £19.99

    Bromine Tablets 1kg

    Spa 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
    £19.99
    £19.99
  • Sale
    £6.98

    Johnsons 4-in-1 Bromine Test Strips

    Johnsons 4-in-1 Bromine Pool & Hot Tub Test Strips are the easiest and quickest way to test your spa or hot tub water for 4 different chemistries. Estimated Delivery Time: 2-3 Working Days
    £6.98
    £6.98
  • £11.99

    Spa & Hot Tub Flush 500ml

    Spa & 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £11.99
    £11.99
  • Cartridge Cleaner 1L

    Spa 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £9.99
  • Scale Inhibitor 1L

    Spa 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £9.99
  • £10.99

    Instant Filter Cleaner 500ml

    Spa 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £10.99
    £10.99
  • Sale
    £29.99

    Spa Chemical Starter Kit

    Estimated 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
    £29.99
    £29.99
  • £11.99

    No Foam 1L

    Spa No Foam is specifically formulated to remove excessive and unsightly foaming.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £11.99
    £11.99
  • Sold out
    £6.99

    5″ Floating Hot Tub Chemical Dispenser

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    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    • Floating Dispenser is great for Spas and Swimming Pools
    • Works for Chlorine or Bromine tablets (20g)
    • Adjust the level of intensity by turning the bottom screw
    • Measures approx 135mm high & 125mm diameter
    £6.99
    £6.99
  • £11.99

    Waterline Cleaner 1L

    Spa 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
    £11.99
  • Calcium Hardness Increaser 1kg

    This 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.

    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    £8.99
  • £44.99

    Spa Chemical Kit

    Estimated 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)
    • Johnsons 4-in-1 Chlorine Pool & Hot Tub Test Strips
    £44.99
    £44.99
  • Sale
    £9.99

    7″ Floating Pool Chemical Dispenser

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    FREE Delivery on orders over £20

    Estimated Delivery Time: 2-3 Working Days Standard Delivery: £4.99
    • Suitable for dispensing 7.6cm (3") chlorine or bromine tablets.
    • Made of durable non-corrosive polypropylene material.
    • Adjustable control ring to control the release of chemicals.
    • Twist lock cap.
    • Suitable for most above ground and in-ground pools.
    • Tablets not included.
    £9.99
    £9.99
  • £49.99

    Chlorogene T25 Tablets 25g

    Estimated 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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