loud overflow, need help

[rossb]

you wrote:

I think I might try the flexible tubing, see what that does....

When I set up my tank I used flexible pipe from the overflows to the sump. My tank is 6' and man it was aweful. It was ... well...flexible. It got dips that filled with water; it would fill up and then syphon...fill up and then syphon...It was not very quiet. I would really think before I did this. Finally it just fell off the overflow from all the movement.

I have ABS pipe in a similar configuration on one end of my tank...it does get quieter...Also I did not use glue so it comes apart nicely when you want to clean out the sump..