Filter Box before
|Redesigned Filter Box|
To implement the changes I had to redesign my filter box. In most situations, the UV sterilizer is placed in-line after the filter and before the pond. In my case it was not possible as water from the filter box flows directly into the pond with no space to attach the UV sterilizer in between. So, I turned the last section of the filter box from which water enters the pond into UV sterilizing chamber.
The filter box is made out of transparent acrylic, and my first step was to block the UV light from effecting the rest of the sections, where bio media is placed with cultures of nitrifying bacteria. I used opaque black acrylic and UV resistant and fish safe Life Guard Pool & Pond paint to block the UV light from the chamber. Then, I installed a 18 Watt Emperor Advanced UV Sterilizer for Savio Compact Skimmer.
|18 Watt Emperor Advanced UV Sterilizer for Savio Compact Skimmer|