I use one on occasion to polish the water. When I use carbon, I just put it on the drain line. My sump is in a separate room so noise is not a real concern. You could fix this by extending the outlet on the filter to reach the water level.
*180 gal Display, 100 gal basement sump, 33 gal refugium, 3x250 MH, 2x160 VHO actinics, zoos, some softies, LPS & lots of acros and other SPS.
*100 gal prop tank plumbed into main system w/ 2x96 PC lights and 1x150 MH,