While using the Lunars I've noticed many corals are open for the entire duration that they are on, which is from 8pm til 6am. The lunars shut off for 2hrs before the atenic's kick on then 1hr later the day lights. Which means these corals never close for more the 2hrs a day.

What I'm wondering is, is this harmful for these corals? What if any effect do Lunar's have on corals? Do the corals need down time?