Review (4/5): Could be Better
Ozonates water well but has a couple of shortcomings.
The 30 minute limit on the timer makes it unsuitable for ozonating oil.
The plastic tubing is kinked from folding to fit in box resulting in restricted ozone flow. This could be fixed by coiling when packed.
The plastic tubing discolors very rapidly - make you wonder what chemicals from the plastic you may be ingesting.