Tunze Stream 6000 alarm goes off!

[sean_nj]

Roger,

The alarm just went off. I am not sure if the alarm came from the 6000 stream or the 7095. I have 3 6000 on a 7095, and after I unplugged this stream, no more alarm. The driver and transformer's temperature are normal, not hot at all. My tank's lights are off now, and I will take this stream out tomorrow to have a look.

Normally what will set off the stream's alarm?

Thanks,

Sean

[rvitko]

Being dirty, calcium deposits in the pump. If it is in use for more than 3 months or is in a high calcium environment (past 400ppm and 12 KH) you need to clean it.