Tank still noisy!!

[Gav_B_UK]

The top end of my overflow that feeds my sump is now quieter after playing around a bit....the problem I have now is the other end......The bottom end that is in the sump (submerged) is making a constant trickling sound. It's not terrible, but loud enough to be annoying. Is there any way I can get this quieter???

Cheers

[reef-man_d-man]

you can try adding some type of baffles, try some filter floss or some foam.