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John in WI
Neo-Luddite


Registered: 12/18/13
Posts: 357
Loc: On a hippy trail head ful...
Last seen: 2 months, 3 days
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Dark cycle interrupted 6 weeks into flowering!! Now what!?
#26994689 - 10/20/20 02:19 PM (3 years, 3 months ago) |
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Hi Folks, this morning I went to check my girls. It was a few minutes before my timer was supposed to turn the HPS and side lights on. I peaked in through the crack under the door, and realized that I had neglected to turn off a small LED I was using for photographic purposed.
I'm running a 400W HPS, and have ~150W (actual) on either side of it, consisting of Warm white and Cool white tubes, and LED grow bulbs. My girls are over 6 weeks into flowering, and are looking very good. Resin glands, starting to turn a beautiful purple color...
So, what effect would having a 13W LED bulb pointed at them, a couple feet away? I mean, for photosynthetic purposes it's negligible, but I'm certain it has enough power to screw with the dark cycle of the plants.
I fixed the problem. It was only on for one night, the other nights it's absolutely black in there.
What can I expect to happen? I seem to remember in Ed Rosenthal's book, where he said that the further they are into flowering, the more tolerant they are of light pollution. Granted that information is from the early 80s.
Damn :-( Things were going really well. Seriously hope I didn't just restart the clock on flowering.
Thanks for any help or sage wisdom.
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hummingbird

Registered: 06/29/14
Posts: 2,134
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Re: Dark cycle interrupted 6 weeks into flowering!! Now what!? [Re: John in WI]
#26994818 - 10/20/20 03:31 PM (3 years, 3 months ago) |
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If it was just one night, it shouldn't really matter. Generally with light leaks in flower the main worry is the stress can cause male flowers to show up...which could cause you to get seeds in your buds.
I have a friend who had a timer mess up on one of his lights. For a few weeks one light was on the whole dark cycle. There weren't really seeds, but the flowers lacked the density they normally had...and the plants looked pretty stressed. I think you will be fine with one night of that small of light.
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John in WI
Neo-Luddite


Registered: 12/18/13
Posts: 357
Loc: On a hippy trail head ful...
Last seen: 2 months, 3 days
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Re: Dark cycle interrupted 6 weeks into flowering!! Now what!? [Re: hummingbird]
#26994829 - 10/20/20 03:38 PM (3 years, 3 months ago) |
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oh, that's encouraging. Fortunately, my actual HPS and grow lights functioned ok. I had one 13W LED bulb ("cool white"), a few feet away. I'm sure it's enough light to have the plants resond, but it's is a very small fraction of the normal intensity of the actual grow lights.
time will tell, I guess. Too late to change it at this point, but the problem is fixed. I guess we'll see what the next 2 weeks or so bring.
Thanks again! Never experienced this before.
The issue was, my camera doesn't work well with the HPS running. I get these vertical lines in the images. So I briefly shut it off and took the pictures under LED. Somehow neglecting to turn one of them off.
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nmd_myco
Obsessed Noob


Registered: 09/05/20
Posts: 198
Loc: PNW
Last seen: 1 year, 4 months
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Re: Dark cycle interrupted 6 weeks into flowering!! Now what!? [Re: John in WI]
#26994835 - 10/20/20 03:41 PM (3 years, 3 months ago) |
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agreed. one night doesn't matter. a super touchy strain might freak out a bit, but probably not catastrophically.
persistent small light leaks are a bigger issue.
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John in WI
Neo-Luddite


Registered: 12/18/13
Posts: 357
Loc: On a hippy trail head ful...
Last seen: 2 months, 3 days
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Re: Dark cycle interrupted 6 weeks into flowering!! Now what!? [Re: nmd_myco]
#26994927 - 10/20/20 04:34 PM (3 years, 3 months ago) |
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Excellent! My space is very dark with the lights off. It's a grow room, built inside of a larger utility room. Even if the basement is lit up, their are 2 full layers to go through. All blacked out with particleboard. This was an isolated problem. I saw it this morning and just thought "shit!" 6 weeks in, I'd hate to blow it now!
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