Arctic Spas Arctic Fox, Owner'S Manual, Page: 113 / 124

1.12 Onzen Frequently Asked Questions
Onzen Questions Continued
Question 8 Should I use Best Defence or another scale remover?
It is recommended that calcium be removed from the water in advance rather than adding a scale remover after the
fact.
Question 9: What is the impact of phosphates on the Onzen system?
High levels of phosphates (above 250 ppb) may reduce the effectiveness of sanitizer output. Question 13 What
happens if my water becomes cloudy?
1. Test the water for chlorine content. If the level is low add Boost.
2. Check your filters as they may require replacement.
3. Check you pH level you may need to adjust you pH down.
Question 10 : Can I use softened water with my Onzen system?
Yes. You probably have a water softener because your water is quite hard. Your water-softener removes calcium
from your water and helps you achieve water with calcium content near the target range, between 50 - 150 ppm.
Question 11: Prior to draining spa water for refill purposes should any form of system flush be carried out?
Yes you can, Arctic Pure ‘Fresh Start’. Use in accordance with the instructions on the container. Flushing the system
components and hoses is helpful when you get biofilm and calcium build-up.
It is good practice to do this at least once a year.
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Understanding Onzen™
Owners Manual - Onzen™