Chat
Recommended

Light hours

WesternFamily
WesternFamilystarted grow question 4y ago
I have the light on for 24 hrs. My seedling is an autoflower. Should i change the hours?
Solved
Week 1
Setup. Lighting
likes
SpiderMite
SpiderMiteanswered grow question 4y ago
This is the opinion of FastBuds and i agree with it. The 18/6 light cycle is perhaps the most common cycle used by most growers. What makes this schedule perfect is that while it provides more than 14 hours of light necessary for the plant to perform to its fullest potential, it also offers six hours of rest. With even 6 hours of darkness or resting period, the plant has enough time to recover and grow normally. It’s perfect for beginners that are intimidated by autoflowers. Autoflowers are programmed to grow as quickly as possible and they begin to flourish right from the get-go. You can’t afford to stress the plant because it becomes difficult for the plant to bounce back. During a 24/0 light cycle, there’s no time for the plant to fight against stress, but an 18/6 cycle provides six hours that can be used by the plant to recuperate. It’s also beneficial for the lights to rest a bit instead of operating continuously for hours with no breaks. The same logic applies to other appliances such as air conditioners, fans and any other electronic appliances that may be used to control the temperature inside the grow room. With a bit of a breather, the devices will last longer than expected. Last but not least, you save money even if you reduce only 6 hours of light per day. It equates to a reduction of 180 hours of light per month! Plants in the 18/6 cycle grow extremely well, so you’re cutting down the electricity by 180 hours in a month. And now that you look at it that way, the 18/6 cycle certainly seems like a better option, eh? So, without a doubt, the 18/6 cycle is perfect for autoflowering cannabis plants.
WeedIsMyLifestyle
WeedIsMyLifestyleanswered grow question 4y ago
Best light hrs for auto = 168 and 186 plants need time to sleep
likes
Complain
GrowCN
GrowCNanswered grow question 4y ago
I believe the plant benefits from some darkness so I use 20 on, 4 off. There are many who do 24 hrs of light so I don't think there is a hard rule about how long the light should be on.
likes
Complain
InspireMe
InspireMeanswered grow question 4y ago
Yeah I'm sure I just answered this as well. Switch to 18/6. Unless you're running a commercial grade set up with CO2, fully controlled environment, commercial grade lighting... the works you're not going to gain anything over an 18/6. its probably going to stress your plant and yield worse results. They need a recovery period, my girls do a lot of growing in the dark.
likes
Complain
Hashy
Hashyanswered grow question 4y ago
I'm sure I just answered this question and it disappeared. When I germinate I have lights on 24hr until the leaves open. Once this happens I'll switch to 20/4 or 18/6 or 16/8 depending on the time of year. Its just a waste of electricity having them on 24/7 because a plant can only use so much light in a day.
likes
Complain
Similar Grow Questions