how to stop gurggling

[weaver5]

I have a 90 gal tank with built in over flow and I have seen a link on here to stop the noise.Was hoping someone would post link for me again.Thanks scott

 

[Balz]

http://www.dursostandpipes.com/

 

[weaver5]

Thanks alot

 

[Keelay]

Or try:

For a durso variant that takes up less space:
http://home.nc.rr.com/stockmanreef/interest.htm

The hofer gurgle buster does it a different way, but has many faithful followers:
http://home.everestkc.net/jrobertson57268/HGB/