Uv sterilizer hob filter

[racoloish]

I'm thinking of buying a uv sterilizer and i want it to be hob. Can someone tell me a good uv sterilizer, and if this one work great?
Aquatop PF40-UV Hang-On Filter with UV Sterilization

I want it for a 20g high and another for a 40g high.

 

[racoloish]

Hi, want to let all of you know that I bought the filter for my 20g and it work great. The only thing that you have to do is put the media, the uv light and water and it starts working. Something that I don't like is the sound when the bubbles pass through the skimmer but I'm fine with that. Now I will be waiting to see if it can clear and remove the algae.