New to hobby build

[hillegom]

About the heaters, you should check this thread out:
http://www.canreef.com/vbulletin/sho...d.php?t=112426

If everything starts to look messy, find a used sump here and put all filtration/mechanical devices in it, under the tank in the cabinet.
You could start with just a small used tank, and put in some baffles.