"MartinOsirus" wrote in message
...
Just got an eheim 2026 and I read they are supposed to run quiet - it
is -
except every 5-10 minutes - the water makes a "gooshing" sound for 15 -
30
seconds. Can't see any air in tubing and primed the pump a few times
and still
the sound.
Any ideas??
thanks.

Let it run a couple of days, as it might just be a bit of air entrapment
in your new sponge. After that, applying a bit of plumber's grease
around any gaskets might help, and re-tighten all your fittings
(especially on the siphon hose).

NetMax