Okay, so now I got a tank and have a idear of how I am going to set it up. First of all I have 2 175 watt mh lamps and 2 4' VHO lamps. will this be enough light for a 135 gallon tank? dimensions are 72x18x24. Also for this I am going to put in a closed loop to eliminate my dependence on Power heads. Should I put in two of them or one large one? what size of pump should I be using for this. And lastly how big of a circulation pump should I use on this setup. I was thinking a 900 gph one but dunno if this is enough. Thanks.