Ive had my two Tunze powerheads running on my Profilux 3 for over a year without issue.
Ive recently tried changing some of the settings and positioning of the powerheads for different affects.

I notice that the powerheads are now both spinning and stopping at the same time regardless of the settings i have set in the profilux.

Ive tried re-booting the Profilux and unplugging the powerheads, Ive also removed the pumps from the stream group and re-created them but still its the same.

Any ideas what could be wrong?

Cheers