forget buying new lights, depending how you mount them a 250 watt single ended bulb can light up to 3x3. also you have to decide how you are going to arrange the rock. if you are going to have 6" of sand bed at each end then you really are only worried about lighting a 4 foot area unless you plan on growing SPS on the sand. if you have two mounds with a space in the middle then you can space them a little closer to the end. if after you are set up and you find that there is room for another light then buy another 250 watt and put it in the middle. as for throwing a 400 on I fell a 400 is a waist of power on a tank that is under 30" tall my self.
I do recommend going with VHO actinic.
Steve
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 *everything said above is just my opinion, and may or may not reflect the views of this BBS, its Operators, and its Members. If cornered on any “opinion” I post I will totally deny having ever said this in a Court of Law…Unless I am the right one*
Some strive to be perfect.... I just strive.
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