Welcome to Reefland!
2 MH will not give you complete coverage over a 7' long tank. 3 would be optimal but can get costly. You may look into one of the Aqualine fixtures which utilize HQI double-ended bulbs and PC's for supplements.
Since you are going with LPS and soft corals, the shady areas provided by 2 MH's may be desired. If this is the case, get 2-400w, either Iwasaki or Ushio with some VHO to reduce the shading.
Lastly, I'm going to move this to the Lighting forum for a better response.
Best of luck,
Scott![]()



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