Ceramic MH Info?

Been out of the loop for awhile and have seen these mentioned. They sound excellent. Anybody have any links where I can read up on them or any discussions here? I have looked but found nothing so far. Also checked a few of my favourite online suppliers and didn't see the bulbs or ballasts listed anywhere..so where do you get them?

http://advancedtechlighting.com/cdmed18.htm you can get one from there.
theres another forum that has a sticky with over 250 pages just about cmh.

What forum would that be? And thanks for the link

Nevermind found it