Hello everyone. I am currently running a 20 long with 1 AI Prime LED light with a hang on back filter. I am in the works of completing my 40 breeder sump for my soon to be 120 reef tank. I have a dilemma with the BRS recommended placements of lights because I have a rimmed 120 with a support brace running across the middle of the tank. I am curious as to if I can get away with adjusting 2 lights to try and make a mixed reef or if I need to plan to get more lights. Lights aren't cheap but like BRS mentions you can buy extras to put up down the road. On 1 side I want my LPS towards the bottom on an island by themselves with the SPS on the other side elevated with an almost free standing look or an arching tower. Ideas and thoughts are much appreciated.