Sickness in my biocube 32

[Saltwater_Reefing]

Hello,
I have a clownfish who experienced a cloudy-looking film over her body after I had a Neon Dottyback pass in the tank unexpectedly, I believe, from the same thing my clown has. I fed her twice a day, and after a week, she has completely cleared up on the outside appearance. I purchased a safety stop. I am going to dose my clownfish in, but what UV Sterilizer should I purchase for my tank, and how long should it be run for each day, and how long should I run it for from the time I get it? I don't have any other fish in the tank other than my single clownfish.

 

[bluemon]

No UV sterilizer fit for a biocube will help.

But first, before any of that,
We first have to ID the disease.

Please post pics and video of your fish in white light.

Also you made a duplicate post.

#fishmedics

 

[Sharkbait19]

You don’t need a UV sterilizer. That allegedly helps prevent ich, but is no more than a band aid - and won’t do anything about active infection.
Pictures would help, but the description sounds like late stage ich. Treatment with copper (coppersafe or copper power) at 2.25 ppm for 30 days in qt will be the best option. The dt should remain fishless for at least 60 days and all new arrivals should be quarantined.