Would a daily Blackout period of 30 minutes mess with the plants health?

I still need to replace a broken timer; initially we planned on 24 hours of light in the initial stage through to veg. When my wife uses the treadmill in the morning, I've got to have the lights off; otherwise she'll blow a fuze.

Would having the lights off for 30 min in the am cause any negative effects?

Thx

if you're running a 24hr light cycle dont worry about it.

im currently running a 18/6 schedule and there have been a few times where the lights got ran for an extra half hr or had to be cut short a half hour.

you'll be fine. even a 20/4 light cycle would be good.

giving them some time to rest is good for the plant. remember that.

thats fine you should have it turn off for a few hrs anyway give them time to rest

Give them at least a few hours of darkness 18 on 6 off would be fine.