I have a Fluval FX5 that I'm using on my 125g Brackish tank and I know it's a great mechanical filter but not the best bio filter out there. I have always wanted to do a W/D but do to the fact that my tank is the centerpiece of the living room it HAS to be quite and look good so no huge amounts of PVC hanging off of it and no overflow. I was curious if I could set up one of those huge rubbermaid bins full of bioballs / scrubbies and have the FX5 flow into that and then have the waer pumped back up into the tank? It seems like it would work and you would have a good mechanical and bio filter that was quiet. Thanks and if anyone has a better idea for a near silent good filtration system for me I'd appreciate the ideas.