Cool im using the stock overflows .I dont really see the need to have such a huge turnover rate .if u do some reading u will find the same info .some people arebusing all 4 holes for drains and running pipes up the side with seaswirls for returns .I just dont see the need for that much turnover ...as for lighting im using my halides for now there will be 3 - 250 watt raduims with lumaibrit reflectors .I also have some led for blues .I am planning on going witht the vertex illumina 360 when I really decide if thats the route I wanna go az for now im not ready to give up my halides .for flow I have an mp60, mp40, tunze wave box ..plus my return .I want more of a wave action since I am planning on making it still a mixed reef with sps .I love my lps and like when they sway .I ordered a new calcuim reactor the vertex rg6 duo which will be here monday