I have 3 filters in my 125 gal
and the magnum for what ever reason will occasionaly spew out of the return what looks like little white flakes, While they do get filtered or drop to the bottom eventually I have never seen any other filter do this.
It was especially heavy after a cleaning like something in the line worked loose, the lines seem clean, but then what could be causing this discharge?
It seems odd since all that is in use in the magnum is the carbon container and the sponge wrap. the two other filter, a Eheim por and and Eheim wet dry are fine