Effect of light leaks on plants with 3 weeks to go?

I'm stuck with space where there is flowering going on. My choices are: to not veg and flower at the same time, and have fewer harvests; to grow 12/12 from seed; or to rig up the best space within the space as I can to veg for 2-3 weeks - hence the title question.

I'm wondering what damage some (very minimal but not dark dark) light could have on a plant in the 7th week of flower. It's not going to send it back to veg. I'm interested in all guesses and especially if anyone has any actual evidence/experience.

You could cause seeds with even the littlest amount of light during the sleep cycle, would not reccomend it, maybe try velcro and some dark plastic over cracks

There are ways to block out light on the way cheap. Do not underestimate the power of cardboard and duct tape. Anyways now I'm one of those "bad " growers who don't believe "light leaks" make any damn difference. I will therefor go into my flowering room, turn on a small cfl well away form any plant and do whatever it is I have to do. Not on a daily basis but if i need to I do and don't have any even wanting to turn hermie on me. constant everyday light on them so long into flowering I would think could delay them if anything. Just me thinks though.

Villa said:

There are ways to block out light on the way cheap. Do not underestimate the power of cardboard and duct tape. Anyways now I'm one of those "bad " growers who don't believe "light leaks" make any damn difference. I will therefor go into my flowering room, turn on a small cfl well away form any plant and do whatever it is I have to do. Not on a daily basis but if i need to I do and don't have any even wanting to turn hermie on me. constant everyday light on them so long into flowering I would think could delay them if anything. Just me thinks though.

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I'm the same way. My theory comes from some flowered plants I grew outside; I figure the sunlight is so bright that it makes sidewalk lights ineffective, especially if they are far away. My purple kush plant has been flowering for a month and a half and ZERO signs of seeds. I'm liking the odds.

I think it all revolves around how many lumens are being exposed to the plant. If it's something like a bunch of CFLs or a 150watt HPS, then light leakage probably would effect the plant since the lumen outputs are low with those techniques.

Long story short for my theory = the more lumens you can expose to a plant, the less you have to worry about light leakage.

**disclaimer** still finishing my first grow, but the proof is what it is with my plant on my balcony. It gets sunlight all day and at night the buildings sidewalk lights are hitting it, but the lights IMO are too far away. and also those lights never messed with my reg plants who needed 'complete darkness' to begin flowering.