sump noise

[EB847]

the outputs of my overflows that empty into my sump are loud because of high flow and bubbles. any mods to reduce noise? ...thanks in advance
http://reefcentral.com/gallery/data/500/118990TANK.jpg

[Craig Lambert]

I would put a 90 degree elbo on each, and then a filter sock on them.

[EB847]

what type of a filter sock? the thick ones or thin type? how would you attach?

[Craig Lambert]

http://www.marinedepot.com/md_viewItem.asp?idproduct=EA1351

[der Riff-Konig]

I put some of the same foam thats on the return of the skimmer, around mine and raised the end of the return to right at water level. No sound at all.