ya you can let me know if you do have some questions, or you can talk to Spit.fire who also got a Zetlight pro from me.
here is his tank journal
http://www.canreef.com/vbulletin/showthread.php?t=88619
You can also check out the video I just shot for 3reef as Zetlight is one of their sponsor.
http://youtu.be/LW28bX9SbSk?hd=1
All these lights are from the same series just 2500 is 72w and the one on my tank is 144w. I do turn it down the setting 9 tho which is the lowest setting.
As for Otto, I wish you can set up your light soon, I am a big fan to see other ppl's tank.