The Phase feature allows myAI users with 2 or more Nero pumps to create a unique and dynamic flow schedule specific to their aquarium's needs. Additionally, Phases are designed to manage an offset for pulse cycles specifically. The random mode does not have a cycle. It will simply change to a new random intensity once a minute, therefore, the phase does not apply to Random.
Nero pumps will have an identical flow setting. You can also think of 0 Degrees as a "sync" mode. For example, if your parent Nero is at 100%, your child Nero(s) would also be at 100%.
Parent Nero will turn on at the 0.0-second mark and turn off at the 1.0-second mark. Your child Nero will turn on at the 0.5-second mark and turn off at the 1.5-second mark. 90 Degree settings help create a very dynamic flow pattern.
Child Nero will be on the exact opposite schedule of its parent. For example, if your parent Nero is at 100% the child Nero would be at 1%. You can think of 180 Degrees as an "Anti-sync" mode.