[CTaylor]

Roger,
Quote from BRS:
"When no light is available the 7097.050 photo sensor will turn your pumps off automatically by picking up how much available light is being picked up by the sensor. When the light is on the pumps will ramp up to follow the max settings on the controller. The photo sensor should be placed directly under your tanks lights and will follow the photo period of your light."
*So it seems I just put the sensor on the y cable and thats it, it is automatic in night mode when lights are off.
*If I have ambient light in the room, not very bright, will it turn off night mode?

*And how to set up inverse pulse?

I have the Tunze 3 stream instructions buried some place. I dont know if it describes the above.

Thanks again!