UV Sterilizers for a Reef Tank?

What is a UV Sterilizer?

A purification method which uses ultraviolet light to kill harmful bacteria and micro organisms.

The problem is the UV light kills beneficial micro organisms too. In my opinion a reef aquarium that is over a year old should not need a UV Sterilizer. Especially if you are using proper quarantine practices on new fish you introduce to your aquarium. Not to say that a UV Sterilizer would not be a valuable tool on stand by for any disease outbreaks. Reason being you are very limited on what medications you can use in a reef aquarium. I would not use a UV Sterilizer on a regular basis for a reef aquarium.