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Swimming Pool & Spa Chemicals – Chlorine & Non-Chlorine Water Treatments for Pools, Spas & Hot Tubs

Explore our range of swimming pool and spa chemicals, Chlorine and non-chlorine water treatments designed for safe, crystal-clear, and balanced water. Ideal for pools, spas, and hot tubs, our products simplify water care while protecting swimmers and equipment.

QD Shock

Chlorine Treatments

Chlorine treatment, Water clarifiers, alkalinity and PH test strips, water treatment, non chlorine treatments and spa treatment tabs. Everything needed to get the crystal clear water every swimming pool and spa deserves.
Aquafinesse spa pack

Spa Water Treatments

A user friendly range of water treatments and chemicals that will help maintain hot tubs and portable spas in tip top condition.
1 litre poolsan

Non-Chlorine Treatments

Chlorine treatment, Water clarifiers, alkalinity and PH test strips, water treatment, non chlorine treatments and spa treatment tabs. Everything needed to get the crystal clear water every swimming pool and spa deserves.

Swimming Pool & Spa Water Treatments

At Dolphin Leisure, we supply only the finest quality swimming pool and spa water treatments to keep your water clean, clear, and perfectly balanced.

Relax Pool Chemicals – Quality You Can Trust

We proudly supply the Relax range of swimming pool chemicals, packed in the UK by Plastica, one of the country’s most respected manufacturers. Every product arrives in perfect condition and ready for use.

Each Relax chemical label includes useful information, easy-to-follow dosing charts, and step-by-step instructions to help you achieve safe, crystal-clear pool or spa water with confidence

Perfect Water Balance

Whatever sanitizing system you choose — chlorine, non-chlorine, or mineral-based — it will only be effective when your pool water pH is maintained between 7.2 and 7.6. Regular shock dosing (oxidizing) is also essential to maintain hygienic, sparkling water. The frequency of shock treatment depends on the bather load and usage.

PoolSan – 100% Chlorine-Free Treatment

PoolSan is a safe and effective chlorine-free water treatment for swimming pools and spas. It provides powerful bacteriological control without the irritation, odor, or harshness of traditional chlorine.

  • Gentle on eyes and skin

  • No unpleasant chlorine smell or taste

  • Requires minimal daily maintenance
    Used with a regular shock dose, PoolSan offers a convenient and eco-friendly alternative to chlorine systems.

AquaFinesse for Spas & Hot Tubs

For spa owners, we recommend AquaFinesse — a simple, once-a-week liquid treatment that keeps your hot tub clean and balanced. Combined with a small tablet dispenser, it delivers beautifully soft, silky water and a more pleasant bathing experience.

A choice of water treatment products in our shop 

Please Note: We are unable to deliver chemicals or liquid products overseas. All other items can usually be shipped internationally; however, additional carriage charges may apply.

 

All pool chemicals should be fully dissolved or diluted in water before adding to the pool.

All pool chemicals should be stored in a dry place and out of the reach of children and pets.

RECOMMENDED PRODUCTS

water treatment for hot tubs - aquafinesse 3 month supply

AquaFinesse Hot Tub Water Treatment and Inflatable Aquafinesse water care

Aquafinesse - the gentle giant in water treatment.

For perfect spa bathing, apply AquaFinesse just once a week and that's it. No smell, no taste, no testing and supersoft-feeling water! AquaFinesse is a patented, environmentally friendly water care solution that allows users to enjoy their hot tubs without the harsh effects of chemicals.

Pure, Clean, Simple an environmentally friendly way to keep your spa hygienically clean. Bathe in pure soothing luxury. Our customers say "This is the simplest water care system available"
Everything you need to experience clean, soft, crystal clear water is in one convenient carrying case.

We take the guesswork out of hot tub water care in one easy step per week! You and your family will soak in the most luxurious water without the time and hassle of measuring multiple chemicals. AquaFinesse is so bather friendly that you can dose the spa while you're still in it !

Special offer - buy two and make a good saving! 

Inflatable Spa Water Treatment Pure, Clean, Simple an environmentally friendly way to keep your spa hygienically clean. Bathe in pure soothing luxury. Our customers say "This is the simplest water care system available"

From £1.50 to £173.90

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Poolsan 20products

PoolSan - 100% Chlorine Free Pool and Spa Water Treatment

PoolSan is a safe, effective chlorine replacement. It is a completely chlorine free system that offers efficient bacteriological control in commercial or domestic pools.

A once-a-week check system saves time and ensures a crystal clear, safe, healthy swim for the whole family. No more red or stinging eyes - ideal if you have any members of your family or friends who have sensitive skin.

The 3 in 1 test kit using tablets is the preferred way of testing the water but testing strips are also available.

From £4.56 to £345.00

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Swimming Pool & Spa Water treatments, Aquafinesse, PoolSan, Blue Crystal, Swimming Pool Chlorine, Chlorine Packs, Non-Chlorine Swimming Pool Chemicals, Salt Chlorine Generators, Water Test Kits