Hi-- We have a 75 gallon salt water tankwith live rock, new snails ,crabs,and shrimp =and everyone is happy. However the noise from the Remora protein skimmer seems to increase daily. I have cleaned thec ollection box and tried to isolate the vibration of the plastic parts with stick on felt pads where they touchthe aquarium with little results. Any suggestions ?? Are there other brands that are quieter?My powerjet is a Rio. This the 5th week of operation of the tank. You can hear the BUZZ 20 feet away or more. Thanks ....!!!!