[Johnseye]

I've always looked for ways to reduce the noise created by the system. My old tank had a Durso drain I converted to a Herbie which helped considerably. For this one I put in a Bean and it's been the quietest and easiest drain of them all. Even with the larger water volume and flow it's still quieter. It's also nice to have most of the noise isolated into the fish room. Now that the Lifereef is essentially silenced by the venturi drawing air through the co2 scrubber instead of the skimmer cup the loudest noise was the water falling into the filter socks.

As Advanced Acrylics made my sump I reached out to them for a solution. Looks like I wasn't the only one with this issue as they had already designed something they call the Diamond Filter Sock Silencer. This thing is great. it's essentially a disc with a lot of little holes allowing the water through. A larger hole in the middle has a pvc pipe stuck through it. If at anytime the little holes were to get clogged and the water level rises it can get through the top of the pvc pipe. Occasionally I'll get a larger chunk of food or some nori on top but I've never had the water level rise much above the disc itself. Flow doesn't seem to be inhibited by the discs. It's nearly silenced the noise created by water flowing into the socks! Now the loudest thing in the fish room is the water flowing through the sump which isn't loud at all.

http://advancedacrylics.com/collecti...-sock-silencer