Can I use chlorine dioxide in hot tubs?

Yes. ChloroKlean chlorine dioxide is ideal for hot tubs and spas. It strips biofilm from the pipework, oxidises bather waste and brings sanitiser demand back down, all without adding chlorine or leaving a chloramine smell.

Can I use chlorine dioxide in swimming pools?

Yes. Chlorine dioxide is a proven swimming pool treatment. It penetrates biofilm, oxidises the organic waste that drives up sanitiser demand, and produces no chloramines, so the water stays clear with no harsh chlorine smell.

How often should I dose it?

Use it every 4 to 6 weeks as a deep oxidative clean in a hot tub, or whenever sanitiser demand creeps up. In swimming pools, dose at the start of the season and after heavy bather load.

Does it replace my regular sanitiser?

No. Chlorine dioxide is a periodic biofilm and shock treatment; day-to-day sanitising of your hot tub or pool still needs chlorine or bromine.

ChloroKlean is our chlorine dioxide brand for pool and spa water, made by Spa Trade Group, the same group behind ClearSpa. The ChloroKlean range covers hot tubs, swimming pools and public-area water.

Is it safe for inflatable and acrylic hot tubs?

Yes. At recommended doses chlorine dioxide is safe for vinyl, acrylic and fibreglass hot tubs, swim spas and pool surfaces.

Will it work in salt-water hot tubs and pools?

Yes. Chlorine dioxide is compatible with salt chlorination and does not damage the cell.

Is there a complete kit?

The ChloroKlean Spa System Core Kit and Pro Care Kit pair chlorine dioxide with a clarifier, test strips and cleaners for whole hot tub care. Contact us for kit availability.

How is chlorine dioxide different from chlorine?

Chlorine dioxide is a selective oxidiser that forms no chloramines and works across a wide pH range. It penetrates biofilm in hot tub and pool pipework where free chlorine cannot reach.

Why does it stop the chlorine smell?

That smell is chloramines, formed when chlorine reacts with bather waste. Chlorine dioxide oxidises the waste without forming chloramines, so the smell and eye sting clear.

What does PT2 mean for pool and spa treatment?

PT2 is the biocide product-type category for disinfectants used in pools, spas and public areas. It is the application chlorine dioxide is best known for in hot tub and swimming pool water.

Will it interfere with my water tests?

Wait 30 minutes after dosing before testing free chlorine or bromine so the chlorine dioxide can vent.

Cloudy water in the hot tub or pool?

Released biofilm fragments. Run the filter and dose a clarifier; the ChloroKlean Spa System includes one.

Chlorine dioxide vs non-chlorine shock?

Both are non-residual oxidisers. Chlorine dioxide penetrates biofilm; non-chlorine shock (MPS) clears bulk-water organics. Use chlorine dioxide monthly and MPS weekly.

Chlorine dioxide vs bromine for hot tubs and pools?

Bromine is a daily sanitiser. Chlorine dioxide is a periodic biofilm and deep-clean treatment that forms no chloramines; use it alongside your bromine or chlorine routine.

ChloroKlean Chlorine Dioxide

Name: ChloroKlean Chlorine Dioxide
Brand: ClearSpa
SKU: wst-1
Availability: InStock
Rating: 5.0 (4 reviews)

ChloroKlean chlorine dioxide for hot tubs and swimming pools. A powerful ClO2 oxidiser that penetrates and strips biofilm where chlorine and bromine cannot reach, clears the bacteria and organic waste behind cloudy water, and leaves it fresh with no chloramine smell.

Penetrates and breaks down biofilm in hot tub and swimming pool pipework.
Tackles the bacteria and organic waste that build up in hot tub and pool pipework.
Oxidises body oils, sun cream, sweat and other organic waste.
Forms no chloramines, so there is no harsh chlorine smell or eye sting.
Works across a wide pH range and suits chlorine, bromine and salt systems.