120 gallon tall , 30 gallon sump , i bought 200 lbs of live rock and put most in my tank , the small pieces in my sump , just a question of flow restrictions ? i have a jebao wp 60 in the tank and a jebao dc 9000 as a return pump i get small waterspouts in my tank sometimes ! rock was set up with lots of caves for my future tangs and lots and lots of rock space for corals , the main purpose of the tank . Friendly mixed reef