Here's a pic of my 90 gallon tank as it sat last spring/early summer. It's a SeaStar 90 48x18x24h, a DAS sump with skimmer, a 45/50 gallon refugium.
Lighting is 2 x 175 watt 10,000k MH and 2 NO actinics, 12 hrs/day MH 14hrs/day actinic.
I used a naturalwave power bar with two Rio 1100s, as well as two Hagen pro3 power heads attatched to some 1/2 in PVC that ran down behind the rock to keep water moving back there. Lots of fish, and inverts.
I took the tank apart when the heat wave hit last summer, most of my coral died from my tank temps hitting 95+ degrees. I haven't decided what I'm going to do yet but I'll probably find a cheap fridge to use as a cooler and run some 1/2 in pvc through there on a mag drive, maybe run that while the lights are on... mind you if it's as hot as it was last summer maybe I'll run it 24 hours a day.
http://www.canreef.com/photopost/sho...cat=500&page=1
Doug