View Full Version : what size uv to remove ozone

12/25/2006, 05:27 PM
i have a 125 that i recently purchased a red sea ozonizer for, next i was wanting to install a uv to remove any excess ozone before returning to the main tank, what size uv should i get?

12/25/2006, 05:32 PM
UV does not remove o3.
Get some carbon.

12/25/2006, 05:55 PM
<a href=showthread.php?s=&postid=8826083#post8826083 target=_blank>Originally posted</a> by Ti
UV does not remove o3.
Get some carbon.

ditto. You need activated carbon.

12/25/2006, 05:58 PM
UV is used in industrial water purification systems to break down the ozone prior to going out to use points. These are much larger systems that are using ozone at real high levels to sterilize the water. Also as I recall the UV was at a specific wavelength to break down the ozone - may not be the same wavelength as the typical UV light sanitizer designed for aquarium use. In any event - you should not need it - as Ti said - run carbon.

12/26/2006, 10:34 AM
after doing some research, according to the university of berkley,

"Ozone can be produced from oxygen exposed to UV light in the region of 140nm to 190nm. Ozone absorbs UV light in the region of 220nm to 280nm, effectively transforming the ozone molecules back into oxygen.

The low-pressure mercury bulbs used by the UV Tubes emit a low intensity line at 184.9nm that has the capability of producing ozone. However since most of the energy emitted by the bulbs is produced at 253.7nm, the little ozone that is produced almost instantly transforms back into oxygen. Because of this, no ozone builds up inside a UV Tube and no ozone ever escapes the UV Tube.

I was wondering in the first place, because i had been taught in my aquatic bio classes that uv did remove o3, but wasnt told how much uv was required.

12/26/2006, 01:29 PM
UV also dechlorinates. neat, huh? but anyway, get $5 worth of carbon rather than a $300 UV.