seio power heads

[tdchicago]

I just installed two new seio 620 power heads.

Is it me or are they really freakin loud?

Any suggestions, am I doing this right?
TD

 

[tdchicago]

I think I got it, just jiggled the power cord around a little.

Silent now...TD

 

[mccarty30]

Yeah mine was kinda loud at first to. After a few adjustment they were quiet.

 

[mazdaghost]

i got one in my tank and the sound went away after a few days.
i think it gets a slime build up in it. because i cleaned the inside
real good and the noise came back. so now i just rinse off the inside.