Matthias I have a issue similar to NorwayEagle. At first I thought my problem was a result of using the same address on each of the three units. Per the other thread I resolved that issue. When using the "test light composer" slider the lights ramp up and down as programmed. While watching the tank yesterday I noticed my center (master) unit was the last to turn off and it should have turned off second according to my sunset settings (all three lamps 7 minutes apart). Note, I did check the moon phase simulation and that option is not checked for any of the three lights I am using.

Simply put, in real time my programing is not working in the correct order according to my sunset settings. I first noticed this when my royal blue's were at 1% on my two slave lamps when they should have been in the 70-80% range. When I connected to the master lamp and manually adjusted the royal blues to 100% and disconnected I have not noticed the issue with the royal blues again.

Any suggestions to get the sunset function to work properly?