I have a 125g w/dual overflows and a sump, thinking about adding an AC110 for additional filtration. I know from experience if the water level in my tanks are not at the highest level, the AC's noise level goes way up, and I get bubbles in the tank from the return water splashing. I remember seeing a mod to the AC110, silicone a piece of thin plastic to the "ramp" that returns the water to the tank. I don't want to go thru the time/trouble of trying this mod unless I get some feedback it works. Has anyone done this mod? Is it effective? Thanks.