UV sterilizer, who uses em?

[SeaHorse_Fanatic]

I do. Whenever I add a new fish, I turn my 40w Lifeguard on for 2 weeks as a precaution because the added stress of new fish usually sees a few specks of ick pop up on my otherwise healthy fish (old & new). IMO the lower wattage sterilizers are only good for small tanks & as water clarifiers, which is why I prefer a 40w.

Anthony