23 min read
Hot tub wiring regulations in the UK explained
Hot tub wiring regulations UK explained: BS 7671, Part P notification, rules in Scotland and Northern Ireland, and the certificates you should receive.
The Oldyon Blog
Hot tub care, without the guesswork
Clear, practical guides to water balance, filters and replacement parts, from the team behind the Oldyon Spa Shop.
Latest article
More articles
Do hot tubs kill scabies? What actually works
Do hot tubs kill scabies? No. Learn why 40°C water can't reach the mites, how NHS treatment works, and how to clean towels, robes and spa covers.
Saltwater hot tub maintenance week by week
Saltwater hot tub maintenance week by week: salt level checks, cell descaling, controlling rising pH, and the tests a salt system will never do for you.
How to lower chlorine in a hot tub safely
Learn how to lower chlorine in a hot tub safely: three methods ranked by speed, when it is safe to get back in, and why the level went so high.
How hot tub jets work, from pump to nozzle
How do hot tub jets work? Learn how the pump, venturi air control, diverters and jet inserts work together, and why a single jet can feel weak or flat.
Pink slime in a hot tub and how to stop it returning
Pink slime in a hot tub is a bacterial biofilm, not algae. Learn how to purge the pipes, clean filters and cover, then keep sanitiser steady so it stays gone.
Hot tub mineral sanitisers and what they really do
Learn what a hot tub mineral sanitiser really does, why you still need chlorine or bromine, how to choose a cartridge and how to avoid copper staining.
Hot tub cyanuric acid and when stabiliser becomes a problem
Learn how chlorine granules raise hot tub cyanuric acid, why too much stabiliser weakens chlorine, how to test for it and how to dilute it back down.
Intex PureSpa Plus range explained for UK buyers
Intex PureSpa Plus explained for UK buyers: how many a six seater really fits, what a 13 amp supply means for heating, and what to check in the box.
Hot tub calcium hardness in hard and soft water areas
Learn how hot tub calcium hardness works in UK hard and soft water areas: how to test it, raise it, control scale and use a pre-filter when you fill.
Hot tub TDS: what it means and when to change water
Learn what hot tub TDS levels mean, how to read a TDS meter against your fill water, when rising TDS means a water change, and how salt tubs differ.
How to shock a hot tub, step by step
Learn how to shock a hot tub: chlorine vs non-chlorine shock, dosing by litres, the step-by-step method and how long to wait before getting back in.