WOuld this be a decent UV Sterilizer ??
 

For my 33 gallon reef

http://www.ebay.ca/itm/36W-UV-Light-...item4601a5f068

This is very big for your tank. But a very good price.
i would think that if you wanted to go that route, use a UV, then all you would need is a 9 watt unit.
The bulb would have to be replaced every year. How much for a new one?
How big of a pump is required?

Before you buy ANY sterilizer, I recommend you research the replacement bulb it uses. Some can be hard to find.
I bought one from here once when it was hard to find

http://americanaquariumproducts.com/1525wattuvBulb.html

What do you want the UV sterilizer to do for you?

I like them for filling up boxes in storage room