You are welcome
Just for some extra readings
http://www.reefcentral.com/forums/sh....php?t=1838276
http://www.canreef.com/vbulletin/showthread.php?t=44531
KZ bulbs are just more expensive than ATI bulbs for (maybe) a little bit of advantage and hence people tends towards ATI. Both are German bulbs so no compromise in their quality