I do this everyday. I work multiple jobs so the light is really only on when I'm actually at home to enjoy the tanks. So it's on for a couple hours then off, so on and so on.
I can tell when I've had it on for a couple of hours or I forget to turn it off before I leave because I'll see a small increase in algae.
I can tell when I've had it on for a couple of hours or I forget to turn it off before I leave because I'll see a small increase in algae.