Lojack, maybe you could post a link to that article?
Right, keep in mind we're talking about flow for sps.
Lps and soft corals don't require quite as strong of flow.
Study from 2000:
(I recently posted this in another thread)
http://www.int-res.com/articles/meps/212/m212p301.pdf
Advanced Aquarist articles from 2006 onward:
http://www.advancedaquarist.com/2006/9/aafeature2
http://www.advancedaquarist.com/2006/8/aafeature
http://www.advancedaquarist.com/2007/1/aafeature