santasapimp
Member
how do i setup my timer inside to match the light when i transplant them outdoors in the end of may? i dont want to light stress my plants and delay my budding
how do i match indoor light to outdoor
- Thread starter santasapimp
- Start date
Sounds like your in the north hemisphere.
Google search daylight hours and location,
Worked for me.
Xare
Active member
I use this website to tell me my sunrise and sunset times
http://www.timeanddate.com/
Search for your town and go under "sun": Find sunrise and sunset-times for other dates
I looked at May, 21st because thats when iam going to plant. It tell me sunrise @ 6 and sunset @ 9
Thats 15 hours of light.
So then you can set your timer to come on @ 6 am and off @ 9 pm
You have now matched your local sunlight hours.
http://www.timeanddate.com/
Search for your town and go under "sun": Find sunrise and sunset-times for other dates
I looked at May, 21st because thats when iam going to plant. It tell me sunrise @ 6 and sunset @ 9
Thats 15 hours of light.
So then you can set your timer to come on @ 6 am and off @ 9 pm
You have now matched your local sunlight hours.
http://www.amazon.com/Stanley-31217-Digital-Outdoor-Photocell/dp/B0020ML74O
i think he's looking for a photocell timer, if i'm understanding correctly
ArcticBlast
i think he's looking for a photocell timer, if i'm understanding correctly
ArcticBlast
santasapimp
Member
thx mate i also read the sticky and since im using auto flowers im gunna do 530am-930pm to be safe
A one time light glitch won't harm you. It's screwing with the light repeatedly that does you in.
While your plant tries to flower the moment it exits the seedling stage, flowering hormones are allergic to light. They build at night and die by day. BUT, as days get short and night gets long, a few survive, they build up, hit critical mass and Voíla! Flowers. This build up period takes weeks. A couple of hours will have no effect. Screwing the schedule daily tells the plant the sun is broken. If they're going to survive, they need to flower now, all by themselves and yuck, hermies!
While your plant tries to flower the moment it exits the seedling stage, flowering hormones are allergic to light. They build at night and die by day. BUT, as days get short and night gets long, a few survive, they build up, hit critical mass and Voíla! Flowers. This build up period takes weeks. A couple of hours will have no effect. Screwing the schedule daily tells the plant the sun is broken. If they're going to survive, they need to flower now, all by themselves and yuck, hermies!
One thing you might consider doing is hardening them to outside conditions before you just plop them down in the dirt. I can't do cannabis outdoors here - laws & such - but I know my tomatoes and other vegetables will just light-burn under the sun if I don't take them out a few hours a day for a week or so to get them acclimated.
A note on timers: If you have a good digital one you can program it down to the minute. You can look up your sunrise/sunset times easily enough online and then you can sit down once a week for 5 minutes and program a precise, real-world-synchronous light schedule.
That said, I wouldn't bother. (I don't do anything fancy with mine.) FB's post is dead-on.
A note on timers: If you have a good digital one you can program it down to the minute. You can look up your sunrise/sunset times easily enough online and then you can sit down once a week for 5 minutes and program a precise, real-world-synchronous light schedule.
That said, I wouldn't bother. (I don't do anything fancy with mine.) FB's post is dead-on.
kannabisativa
New member
deja vu... Seems like the same posted.. has been posted long ago..
True that. Plants bond with the first lamp they see and build themselves accordingly. Throw them outdoors, it's as though the sun went nova and they fry to a crisp. I placed plants outdoors at noon under a trellis so the first day in the sun was a half day half shaded. I'd remove the trellis the next day at noon.
D
DiiZZii3
I didn't think light times matterd with autoflowering strains. I thought they just bud after a certain time period regardless of the light, but correct me if im wrong cuz im not positive
I asked that question of myself for years before i settled on the answer. The answer for me
involves 2 rules....
*Always pregrow with the lowest amount of light possible with a minimum of 14.5 hrs.
*always stay within 1 hour of the actual daylength at time of transplanting. For example lets say the daylength in Mid may is near 15 hours, so I would set my lights for the pregrow at 15.5-16 hrs.
I also mimic sunrise and sunset times. If the sun on may 15 rises at 5:45am and sets at 8:30pm, (chech the almanac) then i set my lights to come on at 5:15 am and turn off at 9:00 pm. 15.75 hrs.
The 1 hour variation in the lighting change is not stressful at all to the plants because of the existence of cloudyness and full moon light in the natural setting require that cannabis by genetics allows for some variation in its daylength requirements. Interuptions in dark, or light periods gaurantee's male flowers, but minor variations in daylength arent significant at all.
Auxins: There is an aspect of your indoor lighting that you always want to consider with your outdoor pregrow. Cannabis produces hormones in reaction to light that actually works to inhibit flowering and maturation. The more and longer they recieve light, the longer it will take them to trigger flowering. Keeping indoor lighting hours to a minimum keeps auxin production to a minimum and therefore your plants will begin to flower as they should instead of a week or two later due to the hormonal impact on flower onset... hence the rule....Always pregrow with the lowest amount of light....
involves 2 rules....
*Always pregrow with the lowest amount of light possible with a minimum of 14.5 hrs.
*always stay within 1 hour of the actual daylength at time of transplanting. For example lets say the daylength in Mid may is near 15 hours, so I would set my lights for the pregrow at 15.5-16 hrs.
I also mimic sunrise and sunset times. If the sun on may 15 rises at 5:45am and sets at 8:30pm, (chech the almanac) then i set my lights to come on at 5:15 am and turn off at 9:00 pm. 15.75 hrs.
The 1 hour variation in the lighting change is not stressful at all to the plants because of the existence of cloudyness and full moon light in the natural setting require that cannabis by genetics allows for some variation in its daylength requirements. Interuptions in dark, or light periods gaurantee's male flowers, but minor variations in daylength arent significant at all.
Auxins: There is an aspect of your indoor lighting that you always want to consider with your outdoor pregrow. Cannabis produces hormones in reaction to light that actually works to inhibit flowering and maturation. The more and longer they recieve light, the longer it will take them to trigger flowering. Keeping indoor lighting hours to a minimum keeps auxin production to a minimum and therefore your plants will begin to flower as they should instead of a week or two later due to the hormonal impact on flower onset... hence the rule....Always pregrow with the lowest amount of light....
I just whack my potential outdoor girls under an HPS on 18/6 for about 2 weeks prior to putting out in mid October, Southern Hemisphere.
