Plumbing Cleaner

Biofilm accumulates in the pipe work of all hot tubs and provides an ideal breading ground for bacteria and algae. Use a plumbing cleaner at every water change to ensure that a significant biofilm layer doesn't build up.

New hot tubs should always be treated because, far from being clean, they have usually been left with water sitting in the pipework for months, or even years, before they reach the customer.

If you have a whirlpool bath you should treat that monthly too.