UV Sterilizer sizing?

[sayuncle]

How do you know what size UV to get? I have a 75 gallon tank. Is there a rule of thumb like cut the rated capicity in half? What about flow rate, again is there a rule of thumb or just follow the directions?

Thanks!

 

[An t-iasg]

Although the UV equipment will be used on a freshwater tank, I have moved this post here since more SW hobbyists have experience with this equipment.

Here are some articles to get you started:

http://www.aquariumadvice.com/article_view.php?faq=2&fldAuto=31

http://www.aquariumadvice.com/article_view.php?faq=2&fldAuto=39

 

[melosu58]

http://www.drsfostersmith.com/pic/article.cfm?dept_id=0&siteid=6&acatid=418&aid=435

 

[sayuncle]

Thanks! You all have been very helpful!