its okay to check up on your garden at night...the spectrum from the green light will not deactivate the darkness period needed for flowering..as far as a supplemental light....... I have no idea..probably a waste of electricity.
I go in under the green Light and clean up, etc. They don't mind.why even go in there during the night cycle anyways? if they are green,when the lights go off,then chances are they are going to be green when the light comes back on...idk..i never have a reason to go in there when they are sleeping..and if i think i do.i just wait till the light comes on.no reason to fuck up a good thing.