Hello.i am new to this group and was suggesting to come here since I am having some light troubles. I have 75 gallon tank that I have I switch over from a 65 corner tank. My problem is my light I have now is not good enough so I am looking into a viparspectra but my tank has bar right in the middle so am I needing two lights or one longer light and then what wattage would be the best thanks to anyone that helps. My thoughts was either one of these but again one or two is needed..