lets start with the original set up, my 135 gallon tank, this tank was running with over 300 pounds of live rock, maybe even more, thats including what was in the refugium!, it have a 55 gall refugium with chaeto and a huge deep sand bed, which flowed into a half filled or 3/4 filled 20 gallon sump, with a euro reef cs 8-3 RC skimmer, for flow i had 2 koralia 4's and lighting i had 2x250 metal halide lights on some super super ghetto ballast, with 2x48" 40 watt actinic lights