So we have a 125 gallon salt water reef tank, which just finished its cycle its a pentagon tank and has a built in overflow which travels to the sock filters on a Emerald sump. We got the EHEIM 2078 for additional filtration. Our overall goal it to make it look clean and orderly, yet I am kinda up in the air as to whether you can, (1 use the Eheim inside a sump) my worry is there will not be enough water inside the sump for the pump, skimmer and Eheim with the factor of evaporation in play. and (2 how I even set it up for that configuration) as its designed to be placed in the tank. And if we did decide to go with the tank configuration how would you make holes in the acrylic for the hose assemble?