Biofilm in Hot Tubs
What is Biofilm?
Biofilm is a complex association of micro-organisms which adhere to hot tub surfaces, particularly inside the plumbing, where they are difficult to remove.
Biofilm contains bacteria and dirt, and often viruses, mould and parasites.
Biofilm grows in the nicks and crannies within the plumbing systems and jets, forming a slippery film.
Biofilm is also a particular problem with whirlpool baths.
Why is it necessary to remove biofilm?
With use all hot tubs, even very well-maintained ones, accumulate unseen biofilm deposits which attract oily grime, micro-organisms and other foreign matter inside the plumbing systems and heat exchanger. Build-up of this biofilm inside the pipes not only provides a breeding-ground for bacteria and is potentially dangerous to your health, it also reduces water circulation and jet action.
A spa with immaculate plumbing results in cleaner, clearer, fresher water and better circulation.
We recommend using a plumbing cleaner at every water change. If you have a whirlpool bath you should treat that monthly too.
Why is it necessary to clean a new hot tub prior to use?
New spas are almost always "wet tested" at the factory to make sure that everything works correctly and to ensure that there are no leaks. The spa is then drained and wrapped in a protective coating. Eventually the spa is shipped to a dealer and then, eventually, to the new owner. All this time the spa has been wet and biofilm, algea and mould has been growing unseen inside the pipework.
New spas also have manufacturing residues that slowly wash out and can cause cloudy water for many months if not removed prior to use.