18hrs Vs. 24hrs

Anyone have anything to say?

Go with nature man.. I did 24 and 18 hours and when doing 24 hours of light my leafs werent as healthy. The longest amount of hours the sun can be up for is 16 hours the most I believe the sun goes down for a reason plants thrive when everything is more natural, . Hence is why I will be doing 16 8 on all my next grows.

Well from what I have heard and read, the advantage of 18 hours of light is the plants will show their sex sooner. The advantage of 24 hours is more growing time. I personally grow 24 hours of light and once I get near flowering I go to 18 hours so I can weed out the males.

Originally Posted by vein5

Well from what I have heard and read, the advantage of 18 hours of light is the plants will show their sex sooner. The advantage of 24 hours is more growing time. I personally grow 24 hours of light and once I get near flowering I go to 18 hours so I can weed out the males.

Is that an argument.. If you do 12/12 from seed plant will show sex in 2 weeks

This kind of an old thread but maybe we can open it up again.

I am running 18 hour days. It was a bitch to set up a timer that was cheap and off the shelf. I finally found one at Ace Hardware that had 20 set points. I will attach the setting I have been using. Growing Northern Lights the plant matured and grew to 20" in 55 days. The plants actually saws 70 days worth of cycle. From what I understand this is not remarkable but a good growth rate. I am now in the flowering stage so I do not have anything to report on yield.
14 on- 4 off watering cycle.JPGIMG_0468.PNGVeg cycle 14 on-4 off.JPG

I personally do only 24/24, and I believe that the only difference if I do 18-6 will be slower growth rate by 25% because vegging plants will just keep growing as long as they receive light.

Lol stick with nature.. if humans had stuck with nature wouldnt be global warming

I have run my veg tent for over a year with 24/7 lighting and like the faster growth I see. I have done 18/6 and 20/4 but like the 24/7 best. Always good and green with no problems.