Lighting

[77mfan20]

Have a Coralife high output t5 lunar aqualight. It has two lunar LEDs for night. Then it has two actinic lights and two 10,000k it says the 10,000 k are for daylights. It simulates midday tropical sun. It says the actinic give softer shades of blue found in dawn and dusk that are good for corals. Then the lunar for night. I'm getting a timer so what should it be set at? I am getting corals as well so yea.

 

[Flreefer]

Many people light their tanks using different photoperiods. The average is probably 8-10 hrs. for the daylights, and 10-12 hours for the actinics.
Usually most turn their actinics on an hour before the daylights, and turn them off an hour after the daylights cycle off. This gives you a simulated dusk/dawn effect.
So as an example, actinics on at 9:00am, daylights on at 10:00...daylights off at 8:00pm, actinics off at 9:00. This would be on the higher side of the lighting schedule.
Some of the photoperiod depends on the strength of the lights too. But this is pretty average for those of us using T5's.