If I were to go with MH I would definately go double ended. So if you say a 150w won't cut it would you say one 250w? I'm leaning more towards the LED at this point, and I was looking at a few different units, my number one choice was the orphan unit, key unit, however medhatreefguy, you mentioned the Vertex illimilux unit, and I had originally looked at that however I thought due to small size of the unit, and the 24" width of my tank I would have to use quite a few units to supply my coral with enough light, but seeing as you think I might only need two I'll take the vertex unit into consideration, how high would you think I would need to hang the unit from the top of my tank?
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