I was out last night and had forgotten I had a second light on in my room. I got home about exactly one hour after the main light went off and shut off the second. Is this gonna hurt my girls? They are on day 26 of flowering.
extra light though not traditional, is allowed during the last 2 weeks (thc labs) of flower. this can increase yeild slightly, just run a 11/13 or 10/14 cycle.