Maybe he was talking about chaeto light period. At least that is how I read it.100% intensity for 12 hours seems like way too much light and photoperiod. You want to ramp up and to and hold your highest point in the photoperiod for a short period of time before ramping down for the night. Try something like 4 hours of ramp up, 4 hours of your max intensity (whatever that may be) , and 4 hours of ramp down. That will simulate a more natural photoperiod and should be overall better for all of your corals.



