UV sterilization

[Daniland]

Is it worth getting a UV sterilizer to run 24/7 or would getting on my smaller quarantine tank be as effective? My display is 135 gallons and my quarantine is 46 so buying an appropriate sized UV sterilizer is much more economic for the qt tank but in the end I will have about $500 of fish in my display and I don't want to take risks. I run them on my clients tanks and they don't have illness but they don't get as frequent cleaning as my discus tank.
Have any of you found a UV sterilizer to be effective in prevention? I know that's kind of hard to judge if you are measuring something that's not happening...

[Ryan925]

Most people here will tell you uv is not needed due to frequent water changes. With that said a properly sized uv with proper flow rate, does have its benefits. Though it is beneficial it still is no substitute for wc

[Filip]

I started using UV month or two ago in my discus BB display tank . It had noticeably helped me with my 6 months black beard algae battle .
I see lots of clumps of dead alge , coming out of my canister outtake every time I switch off and on my canister filter . So the killing effect of algae is literally visible with UVs .
About keeping diseases and pathogens at bay , we cannot visibly see or witness that , but many labaratory tests and bacterial plate count tests , confirms that proper use of UV is effective in keeping the pathogen levels lower than without running one .