Purge

I used this product because the website guaranteed 100% that it would work. I followed the instructions on the bottle but to date it has not worked as well as I had hoped. I am still getting traces of bio-film weeks later. I have now drained the spa whilst I come up with another plan to deal with it.
To be fair, another popular brand I was using did not get rid of it either.

Great results and very easy. Compared with our previous emptying and pipe clean this was so simple and quick. I don't use chemicals in the spa so this was a great option. I will definitely use this product again.

Trying to use natural products on the spa. Used this for the first time before draining the spa. Water looks cloudy, which means pipes are clean I believe. No harsh chemical smells. Easier to use, just pour it to the spa filter box and run jets. Also kept overnight and ran jets again for deeper clean.

I only use biological products in my spa and have done so for the past 3 years.
Easy to use and maintain.
Spa always azong and clean.