Dustin wrote:

Where is a good faq / all about site for water chemistry, ideal conditions,
etc?

http://www.thekrib.com/Plants/CO2/
This covers the key points: KH, GH, pH, and CO2.

http://www.thekrib.com/Chemistry/
This covers basic chemistry

http://www.csd.net/~cgadd/aqua/articles.htm
This covers fertilization and other topics.