That one was my second choice. I rated it lower than the Vecton because the quartz sleeve can not be removed and the bulbs are 1/2 the price.I had the same thoughts when I was shopping, but also couldn't really find much real world experience on the Vecton. I went with an Aqua Ultraviolet Advantage and have been pretty happy with it.
-Justin
thanks for the reply,Here is a pretty extensive overview of UV sterilization that I found helpful. They rate the Vecton's as one of the best
Aquarium & Pond UV Sterilization | How to use a UVC Sterilizer
That one was my second choice. I rated it lower than the Vecton because the quartz sleeve can not be removed and the bulbs are 1/2 the price.