Here is probably one for Paul B to answer :) But don't let that cause you not to chime in.
Do corals sleep? I think so simply from observation of the dramatic changes in the look of a coral from daylight to night time.
Every night, my Toadstool, mushrooms, Zoas and Gorgonians all seem to...
I Am Debatin on letting the Aqua controller take over the light cycle, it has shorter day times this time of year, and longer day times in june july etc.... except, it is still way longer than i run right now, so.... what does everyone run for a day cycle???