Hi Cindy, I had/still have a RedSea WaveMaster Pro when I set my tank up years ago. It has, even on that dated technology a night mode and I used it. Generally, it is accepted that the reef is a bit calmer during the evening hours. I can't say for certain the reason for this but it might have something to do with heating and the resultant wind during the day. I'm no meteorologist, but my anecdotal observation of having dove in many places and at night that the reef does, in fact, appear to be less turbulent during the evening hours. As I am setting up my new tank, I will be again utilizing the night mode on the old wavemaker as well as the function on my Gyers AND my Jebaos via the Apex. I think it is a good idea so I would say go for it. Your fish will appreciate a calmer nights sleep as well.
