It looks like you choose how long you want.
RAMP TIME :
Ramp time is the time you want your lights to come on from NIGHT to DAY setting and from DAY setting to NIGHT. If you want your BLUE channel to ramp longer and the WHITE channel to be shorter set the BLUE channel to a HIGHER ramp time and WHITE to a shorter.
- Recommended SETTINGS : CH1 ( BLUE ) - 60 - CH2 ( WHITE ) - 30
RAMP DELAY :
This gets people every time. I am here to help! All this does is DELAYS a channel from coming on for a period of time. Most people enjoy seeing the tank lit with all blue first of the morning and at night. How do you do this? This creates some very cool effects.
- Recommended setting : CH1 ( BLUE ) - 0 - CH2 ( WHITE ) - 30-60
From:
https://www.nano-reef.com/forums/topic/348723-storm-controller-how-to-help/