European magazine for pools, spas and wellness
Pool and spa business magazine
Water advice

Fast answers to water problems

Find the cause first, then dose chemicals. A clear guide for green water, foam, odour, pH, filtration, metals and running costs.

Green pool water

Green pool water

What to do immediately, how to recognise algae and when filtration is the real issue.

Foam in a hot tub

Foam in a hot tub

Cosmetics, biofilm, filter condition and organic load. When anti-foam helps and when water replacement is better.

Brown or rusty water

Brown or rusty water

Usually iron from a well or metal contamination. A calm process without chemical chaos.

Chlorine smell

Chlorine smell

A strong smell often means chloramines, not clean water. What to measure and how to correct it.

pH, chlorine and alkalinity

pH, chlorine and alkalinity

A quick guide to safe values for pools and hot tubs and the right order of adjustment.

After a storm or holiday

After a storm or holiday

How to recover water after heavy load, filtration downtime or a week without regular care.

Hot tub odour

Hot tub odour

Biofilm, old water, filters and pipework. When adding disinfectant is no longer enough.

Hard water and scale

Hard water and scale

How to protect technology, jets, heaters and surfaces from deposits.

When not to bathe

When not to bathe

Situations where it is better to measure, treat the water or wait after dosing chemicals.