24/7 lights...

It's time to put this topic to bed... What is the deal with a 24/7 light schedule for veg? Is this a good or bad practice? I have always run a 24/7 for veg but have been told this causes more hermies. I have had my share of herms but have had several VERY nice harvests. I get to the 4th node in 4 weeks from seed w/this method and can usually reach alternating nodes in 7... Will a dark period slow things down? What are some pros and cons to a dark period vs. none? What about running a 24/7 4 weeks-20/4 2 weeks- 18/6 2 weeks - switch to 12/12? Will a steady decrease do anything magical? All these years later and I can say some people dig it, some don't, but seriously... what's BEST?

i think 24 hr lighting is for"pre veg"...then 18/6,for veg....but that's me...

i ran my plants under 24/0 and they did just fine of them them even starting to flower b4 i clicked them into 12/12.

that gradual decrease in lighting sounds interesting, it sounds like something I'll test! I think 24/7 lighting is better, it gives me faster harvest!

i always run 24/7 in veg plants arent people they dont need sleep thats just stupid hippy bullshit

sven deisel said:

i always run 24/7 in veg plants arent people they dont need sleep thats just stupid hippy bullshit

Click to expand...

Actually the plants do rest. Cannabis plants want to naturally close their stomata's for a period of time. Even though your lights are on for 24 hours a day, the plant rests for 6-8 of those hours and greatly reduces it's processes.

Put them on 18/6. Yes you have to fork over 7 bucks for a timer, but you will save $$$.

well i leave mine on for 24 hour period. Reason being is that when i turn the light off the temperature drops from 28 degress C to about 14 degress C, so ive got no choice. It probably works out cheaper this way because the bulb would be cheaper to run rather than using a full room radiator 6 hours a day on full blast.

Also because my grow area surroundings is soo cold, im able to put my 600 watt bulbs very close to my plants without the use of a shield which appears to have very good possitiver affects for my plants in terms of growing speed when compared to some other peoples grow journals, worth trying if you live somewhere cold.

bLITzkRIEg420 said:

It's time to put this topic to bed... What is the deal with a 24/7 light schedule for veg? Is this a good or bad practice? I have always run a 24/7 for veg but have been told this causes more hermies. I have had my share of herms but have had several VERY nice harvests. I get to the 4th node in 4 weeks from seed w/this method and can usually reach alternating nodes in 7... Will a dark period slow things down? What are some pros and cons to a dark period vs. none? What about running a 24/7 4 weeks-20/4 2 weeks- 18/6 2 weeks - switch to 12/12? Will a steady decrease do anything magical? All these years later and I can say some people dig it, some don't, but seriously... what's BEST?

Click to expand...

Marijuana plants photosynthesize as long as they receive light as well as water, air, nutrients and suitable temperature. Photosynthesis is the process in which plants use the energy from light (primarily in the blue and red spectrums) to combine carbon dioxide (CO2) from the air and water (H2O) to make sugar while releasing oxygen to the air.
Plants use sugars continuously to fuel metabolic processes (living) as well as for tissue building. The plant combines nitrogen (N) with sugar to make amino acids, the building blocks of proteins. They are the substance of plant tissue. When the light is off, the plant's metabolic processes, respiration and growth continue.
The marijuana plant can photosynthesize continuously, so it produces the most energy and growth when the light is on continuously. Continous light does not stress the plant, which reacts to it somewhat mechanistically. Plants can suffer from heat emitted by lamps, but will not undergo stress due to continuous lighting.
Plants under 18/6 light/dark regimen are producing sugar only three quarters of the time. They are thus growing at only 75% of their potential. Leaving the light on continuously will result in bigger plants faster, which leads to higher yields.