I would suggest at LEAST the 2 96...I have a 30 gallon, check out my pics, but also have a 400 mh 20k that runs 5 hrs of the total 11, without the 2 pc's on..check out this site for good retrofit PC prices..I painted the inside of my hood white, put a 4 inch radio shack 14$ plus have to cut cheap extension cord and wire nut to fan on back of canopy and blow in over water, it removes enough heat..I added a second and just those 2 blowing on water and 400watt mh my water temp does not increase with house temp at 76 degrees. *I do have a sump, so that helps with evap and have auto topoff from rodi unit to keep salinity stable with the evaporation. *2 96's you can keep about everything except sps or clams on the bottom of tank...you can actually fit 4 96's in canopy, if you have a canopy..if not check out their canopy style pc's, email me, if you want I can send you a picture of inside of my canopy..all DIY..
spitlerbrian@rhtc.net * I'm iced in for the third day in a row...I'M BORED !!! can't do anymore water changes !!!
http://www.hellolights.com/362xcoraqpch.html
or
http://www.hellolights.com/2x96wcfbalki.html