Do bulbs matter in darkness?

Ok this might seem like a stupid question. To my knowledge when you flower you want to go 12/12 . I was wondering if it was the amount of lumes per watt that affected that cycle. Like say you had a standard light 60 watt light bulb that couldn't grow mold on cow shit. If that was on say as a bathroom light would that have any effect on a grow in the next room if it was in darkness. Say your growroom had a night light.

Quickly 12/12 means 12 hours of light & 12 hours of dark. The light to dark ratio is what starts the bloom phase . during spring or vegg your light ratio is generally 18/6 (18hrs light - 6hrs dark) and they will keep growing until you go 12/12...

Now about light exposure during your dark or night cycle...

After replacing my AC unit i had a little bit of outside sunlight leak in from outside when my plants where sleeping. This went on for about 2.5 days, that little beam of light was enough to shock my plants closest to the AC unit and they grew little yellow pods which later on matures to contain pollen... they pretty much went Hermaphrodite on me


notice the small yellow pedal growing out from the bud... this is late in the cycle last week or so so the damage was negligible. If this happened to me earlier in the cycle and i left light bleeding in from outside i would of gotten full blown seedy buds

If you need to be in your room during the dark cycle grab a couple Green LED flash lights ($10/ea). Generally speaking plants are green because they reflect that particuiar spectrum back to you therefore a green LED will not harm your plants during the dark cycle because the plants dont use that wavelength for cholorophyll production.

Yes, but that doesnt address the question, that was sunlight, and while just a small bit of it, it had the ideal spectrums of light...shit, its the sun. He's asking about another spectrum, if Im understanding this right...and I've wondered that to, especially if its an incandescent bulb.

Though i do know that your right about that green spectrum being the most safe option bar none...

unless its green, NO LIGHT AT ALL.

RavenMochi said:

Yes, but that doesnt address the question, that was sunlight, and while just a small bit of it, it had the ideal spectrums of light...shit, its the sun. He's asking about another spectrum, if Im understanding this right...and I've wondered that to, especially if its an incandescent bulb.

Though i do know that your right about that green spectrum being the most safe option bar none...

Click to expand...

Considering you know a little bit about the color spectrum, you should already know exactly why having an incandescent bulb or any light source on during your night cycle would shock and stress your plants

for the rest of you that would like a lit bit of an insight, white light is technically full spectrum (all the colors of the rainbow) so considering that most incandescent and florescent bulbs aim to reproduce white light. If you where to leave this on in your room during a night cycle your giving your plants enough blue & red spectrum lighting to think its day therefore they start up chlorophyll production when they should be sleeping.

They say that, but how much usable spectrum do they give off? tried growing with one? Even with an agro incandescent, let alone a normal bathroom one?

Uninterrupted total darkness for 12 straight hours, no light or light leaks. Unless of course you have green spectrum lighting. Go to your local kmart or walmart or walgreens or any other store like that and look for green party bulbs, incandesent ones are ok for this and will work fine, but cfl and led ones do exist, its just they are more expensive than the $1.25 incandesent green party bulb.

RavenMochi said:

They say that, but how much usable spectrum do they give off? tried growing with one? Even with an agro incandescent, let alone a normal bathroom one?

Click to expand...

here is a quick peek at your usable spectrum

darkdestruction420 said:

Uninterrupted total darkness for 12 straight hours, no light or light leaks. Unless of course you have green spectrum lighting. Go to your local kmart or walmart or walgreens or any other store like that and look for green party bulbs, incandesent ones are ok for this and will work fine, but cfl and led ones do exist, its just they are more expensive than the $1.25 incandesent green party bulb.

Click to expand...

Do Not Use Green Party Bulbs... or CFL & incandescence for that matter... the outside glass is painted green to mimic green light but its technically tinted white light and will still emit blue & red spectrums therfore tricking your plants.

LEDs will only emit light in the wavelength the diodes are desgined for. So use green LED flash lights. totally safer and only $10 or so at your hydro shop

DVSxGenetix said:

Do Not Use Green Party Bulbs... or CFL & incandescence for that matter... the outside glass is painted green to mimic green light but its technically tinted white light and will still emit blue & red spectrums therfore tricking your plants.

LEDs will only emit light in the wavelength the diodes are desgined for. So use green LED lights. totally safer and only $10 or so at your hydro shop

Click to expand...

Not true, I and other veteren members on here have been using them for literally years in some cases and never had a problem. They are just trying to get you to spend money on their products. I know for an absolute fact that they are wrong.

DVSxGenetix said:

View attachment 1263872

I don't bother with compacts, florescent, or incandescent bulbs.
1. they don't provide enough red lighting spectrum to be that viable for flowering
2. low light intensity (you can do more with 1 HID than 10 CFL)

Click to expand...

†LHAO† umm....not to be captain obvious, but if you don't bother with them, then you don't know, do you? Your going off of theory. Hence your answer should have been "I have no fucking clue, never had one near a plant." Not to mention, while I am moving to hps soon, I've seen people grow respectable plants, especially with enough cfl's. Before I found rui I did try an incandescent "grow" bulb, complete scham, will get you maybe 2 weeks into it. A regular incandescent, nothing....really, try it...Right now I'm finishing to plants outside, and sometimes at night I'll bring them in, check up, take a sample, and put them back. This is in the room with a 10w cfl, guess what. Nothing, not a sighn of hermie to be found, and I've been doing this over a week. so, having tried it, nothing, have you?

darkdestruction420 said:

Not true, I and other veteren members on here have been using them for literally years in some cases and never had a problem. They are just trying to get you to spend money on their products. I know for an absolute fact that they are wrong.

Click to expand...

Dark, don't question him! He knows these things! (despite himself saying he has no experience with any such type of bulb)

darkdestruction420 said:

Not true, I and other veteren members on here have been using them for literally years in some cases and never had a problem. They are just trying to get you to spend money on their products. I know for an absolute fact that they are wrong.

Click to expand...

i dare you to scratch the tint off on you green bulb and see what color light you get next

you probably missed this but now you can compare the color spectrum to the chlorophyll production spectrum and see why having any kind of light during your night cycle can affect your plants


View attachment 1263945

In theory thats great, in practice, doesn't happen. Your one of those people that "know" a car will blow up if you shoot its gas tank, at least with a tracer round...afterall, fuel, fire, in theory, boom!! must he so! (its not btw, doesn't work, hollywood magic, nothing more)

Chance Favors the Prepared Mind. I guess i'm just a little more prepared

At what, irrational fears? I left those behind as a child. Maybe you just had a boring life?