Lighting question

How bad would it be for my plant if one day my landlord gives me a notice that he is going to come make a quick repair and I turn the lights off for 1-3 hours during the time when they are normally on? How bad would this be? It would just happen maybe once or twice during the whole grow.
thanks in advance.

it's about the same as a huge dark cloud covering your plant for hours...

it'll be fine.

Ive often thought of this as i live in a rented house. I dread the day it happens as i cant even smoke in this place but i do daily and it stinks of weed all the time. As for upstairs, theres no way i could let my landlord up there cos he would know im growing. Think im just going to panic and go into hiding lol

Ya I'd be alright everything is contained in the cabinet. I just wouldn't want him to notice the cabinet is buzzing with the sound of fans. Ya I guess my plant would think of it as a cloud. Atleast my landlord gives me the courtesy of letting me know when he is coming by for regular maintenance.