
Hot tub chemicals you actually need
Which hot tub chemicals you actually need, what each one does, which extras are optional, and how to store them safely so they are never mixed and stay dry.

Which hot tub chemicals you actually need, what each one does, which extras are optional, and how to store them safely so they are never mixed and stay dry.

Learn how to empty an inflatable hot tub: fitting the drain hose adaptor, clearing the last few centimetres, drying the liner and packing it away.

Using a hot tub for arthritis? Learn what the evidence says, the safest temperature, a gentle water routine for stiff joints and when to stop during a flare.

Why is my hot tub water green? Learn how to tell algae, copper and other metals, and pollen apart with simple home tests before you treat the water.

Learn what makes the most powerful hot tub jets: flow per jet, pumps, plumbing and jet type, why horsepower misleads and how to judge jets at a wet test.

Patio hot tub ideas for layout, lighting, planters, storage and outdoor kitchens, plus how to check your paving can safely take a full tub's weight.

Baking soda in hot tub water raises alkalinity just like a branded increaser. Learn the dose per 1,000 litres, which product to buy and how it affects pH.

The Bullfrog R Series explained: how JetPak jet seats work, where the range sits in the Bullfrog line-up, and what to ask a UK dealer before you buy.

Thinking of a hot tub on a balcony? Learn how to work out the weight per square metre, who must sign it off, leaseholder consent, drainage and power.

Learn how to use a hydrotherapy hot tub at home: safe temperatures, jet use, session length, gentle exercises and how it differs from clinical therapy.

Is a 2 person inflatable hot tub right for you? Compare comfort, heating, durability and running costs against a small hard shell tub before you buy.

How many calories do you burn in a hot tub? An honest look at the passive heating research, why the number is small, and where a soak fits alongside exercise.