This is an outstanding article. I read in most publications targeting Alkalinity of 8-10. This article suggests higher levels unless I'm reading it wrong. Anyone seeing better growth at 12-15? If so, how high are you maintaining Ca and Mg?
http://www.advancedaquarist.com/2004/10/aafeature
http://www.advancedaquarist.com/2004/10/aafeature