12/12 lighting question?

Kaya08 · #1 03-02-2008, 08:28 AM

Hi guys Ive got a few babies who just entered 12/12 phase and I am curious about disturbing the pattern, can the plants growth be stunted by walking into the dark period with a low power light? what about if the electricity cuts out to the neighborhood during the 12 hour light period? will short 2, 3 minute disturbances to water/mist the plant in the dark period be useful or cause harm to the plants? I have read posts who claim things like a computer screen and lights throwing off the plants light schedule, just wondering if any REAL harm is done/any proof of this?

ScarletteSky · #2 03-02-2008, 08:31 AM

Yes, I cannot stress this enough. LET THERE BE NO AMBIENT LIGHT TO DISTURB THE PLANT. It's a baby, and you just don't want to wake it up. I you must mist do it a few moments before sun up, or sun down.

panhead · #3 03-02-2008, 09:17 AM

Too much emphasis is put by many on having 100% darkness all the time,constant room filling light or direct light is bad but having a very small low power flash light with a green lens wont harm you,just dont leave the flash light on all the time,if you must have a light on to mist your plants flick the flash light on just long enough to take aim with your sprayer then flick it off,kinda like a lightning flash just be sure to direct the light twords the ceiling & not at the plants.

Things like computer screens emit a constant light & the spectrum of light is compatable with plant life so yes they will screw your plants cycle up,power failures & such cant be helped,i'd be more worried about the lights restarting while the bulb is still hot & burning out then i would be about the effect on the plant from a power failure.

Plants do just fine in nature without 100% darkness.

ScarletteSky · #4 03-02-2008, 09:20 AM

I've read on the net that your plant's sex is predisposed to the elements. Plants that have total darkness in the 12/12 cycle are more likely to become female. From a person who let ambient light in and got 75% males....

jimmyspaz · #5 03-02-2008, 09:21 AM

I use one 13 Watt green cfl if I ever have to go in during dark, but I try to avoid doing so as much as possible.

email468 · #6 03-02-2008, 09:52 AM

my understanding is dark during the light period does no harm but light during the dark period is bad and to be avoided. Though i'm assuming a light as bright and for the duration of a full moon couldn't be harmful as it occurs naturally.