ok i am trying to make a refugium/frag tank and i am having a hard trouble finding the center point from the intake and outtake. for my outtake i have a power head pushing water through and i have a pvc flow valve to control the amount of water push's through. for my intake i have a filter also with a pvc flow valve to control the amount of water that goes in the refugium. either my 60 gallon get's over flowed with water and my 14 gallon refugium get's emptied out with hardly any water. or the 14 gallon get's over flowed with water and my 60 gallon get's emptied out. i have been trying to get this tank under control all day. tightening and loosining the pvc flow valves to get to a steady point and it is not happening. how can i get to a steady point? the flow of my power head is 175 gph. the filter i only turn it on so it sucks water and than i shut off the filter and i let gravity do the rest :help2LEASE. this refugium is driving me crazy