So i have my 75 gallon tank just got a 20 gallon long and want to hook these up to each other.So my 75 has a whole on the top i want to put pipe in there to take water out to put in frag tank.From there it will flow down through the overflow aqua masters and in the sump from the sump i will have the return go to my main tank sump does that sound safe and ok.PLEASE GIVE ANY INPUT ON HOW TO PLUM THESE TOGETHER ONE ACRYLIC SUMP DRILLED WITH BULK HEAD AND THE OTHER IS GLASS NOT DRILLED.