250w or 400w Please help

[loveless]

I need help deciding what type of lighting to use.

The easy answer is 400w but is it really needed.

This is for my new tank I am setting up and have a build thread on here http://www.canreef.com/vbulletin/showthread.php?t=51066for it.

Questions and thoughts.

I have read Sanjay Joshi's review http://www.advancedaquarist.com/2009/1/reviewon reflector outputs and am leaning towards the Lumenmax Elite reflectors. The tank is 90" long and 30" wide. The depth of water is approx 22" after the sand is in place. I want to run 3 250watt bulbs over this tank and am wondering if any of you have any thoughts on why I should go with 400's instead. It will be an SPS dominant tank so I realize the requirements are high, but people are having great success with T5's.

The technology and design in todays reflectors go far past what the old spider reflectors were and in my eyes I should be able to get away with a 3 x 250w setup.

Your thoughts and ideas please

Cam