So I bought a used 200int ($160) for my newly built system. 210 gallon display with a Bashea Biofuge sump. I fired up the skimmer last night for the first time and it is way loud. Like an unacceptably loud hum from 25 ft away. So my question is this: if I replace the current ac pump with the Varios 4s dc pump (which RO says fits just fine), can I expect that will take care of the noise issue? Or is noise inherent in the design of the skimmer regardless of the pump? The Varios is $335 which combined with the $160 makes for a $500 skimmer. Should I consider reselling the 200int and starting over. In other words is there something comparable that's quiet and will be less than the $500 I'll have invested in the 200int and Varios? I plan on having a medium to light bio-load in the tank.