Ok, I am exhausted, but I have finally set up the 55 gallon that I bought. It has a built in overflow, drilled intake and outtake in the bottom of the aquarium, 50 pounds of live rock, some zooanthids, mushroom coral, a couple of inches of live sand, refugium (with dying caulerpa and miracle mud), bioball chamber and a pump. I will be adding a protein skimmer to the sump. Everything looks great, although I have a little bit of a silt problem because I had to remove most of the sand in order to lift the tank... Here is the main problem... the pump is extremely loud and vibrates. It is a Rainbow Lifegard Quiet One 4000 high head (980 gph, 1 inch inlet, 3/4 inch outlet). Does anyone have any recommendations for a quieter pump? Or even a better pump?