Not completely dark during veg time lights off?

[bobman]

I am thinking about going to 18/6 or 20/4 and was wondering if having cloning lights, daylight or light leaks in the same room during to lights out time will stress the plants? Basically, does it have to be completely dark like in flower?

 

[habeeb]

if in veg, no problem

 

[bobman]

thanks, i want to be able to work in that room and save a little electricity.