Lighting a 540 sps

[celstar]

I will be starting a 540 gallon reef tank. I have a 72" outer orbit with 4 96 watt actinic 3 150 watt hqi MH. My tank is 96x36x36 What is everyones suggestion for add on lights. I would like to keep alot of SPS and some LPS. I would like any input on experiance with a 1000 watt MH from Aqua Medic? Please send advice.

[Fiziksgeek]

You can probably get away with 400W MHs if you run something like an XM 10K bulb which has high PAR. Also, a good reflector, like the lumenarc 3 will help.