How many use a UV sterilizer?

[zippy]

Honestly, with no hard feelings, how many people truly use a UV sterilizer for their tanks? Do you feel it is a luxury item or a necessity or even a No-No?

 

[mykgillespie]

I only use them on well planted Freshwater tanks. They tend to zap all the beneficial critters as well as the bad ones. Best to quarantine, feed properly, and keep excellent water quality/low stress environment and the fishes immune system will do the rest!
Myk.