photo periods

[Madreefer]

This may be a stupid question, but should there be a time of total darkness? When my actinics and MH are off my moonrays are on which gives my tank light 24/7

[Oscar]

Originally Posted by Madreefer

but should there be a time of total darkness?

Would the ocean be exposed to light 24/7? Probably not. A full moon only appears once every 28 days and even then you would have to expect some clouds to block some moonshine.