Lights off for 2 days before flowering to increase yield

A friend of mine says he turns his lights off for 2 days before he switches to 12/12 and this increases his yield?
Has anyone else tried this with success?
Personally i think its a bad idea to disrupt your light cycle at any time but hey what the hell do i know am on my 2nd crop! Peace

Sounds like a myth to me. Too many people over complicate things. It grows naturally. Try to emulate nature. There are never 48 hour dark periods in nature. Just my opinion. Take it or leave it.

Yea very true, ive always been taught to emulate nature and i think il stick to it! I would imagine disrupting your light cycle would cause unnecessary stress.

he's misunderstood the myth he repeated to you. the dark between veg and flower is claimed to trigger flowering faster. if you want to see for yourself if he's right or wrong you could try the 24hr or 48hr dark period between veg and flower on a plant and see how it compares to the rest. clones would be best for the experiment as it takes out the variable of it just being genetic differences between the plants being compared. i have tried it multiple times myself and so far ive never seen any benefit whatsoever and if anything hurts because they basically lose the first day or 2 of flower as they are not getting any light to make into energy to fuel the start of flowering.

In the Jorge Cervantes bible he says leaving the last two days in complete darkness does seem to pack on more crystals

iv got a mate who grows and he swears by this,,,,says they flower faster than normal....not that theres any more bud like but hel finish a bit earlier

I have not done it myself yet, but, after seeing Prof Marijuana's buds (he uses this method) I will be giving it a go. I have always put the girls through a 3 day dark period before I chop and they do pack on some crystals.

how is 48 hrs of dark complicated, and i have done it for yrs and yes it helps if you runa 24 hr veg like me to kick start the process and i usually see small flowers a three to four days sooner

your extremely lazyif you think 48hr of dark is to much work and probably suck at growing if your not willing to try somthign so simple and possibly effective

Samwell Seed Well said:

how is 48 hrs of dark complicated, and i have done it for yrs and yes it helps if you runa 24 hr veg like me to kick start the process and i usually see small flowers a three to four days sooner

your extremely lazyif you think 48hr of dark is to much work and probably suck at growing if your not willing to try somthign so simple and possibly effective

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See my quote:

silusbotwin said:

Sounds like a myth to me. Too many people over complicate things. It grows naturally. Try to emulate nature. There are never 48 hour dark periods in nature. Just my opinion. Take it or leave it.

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I think the point here is that people who have actually tried this method have seen results! I haven't tried and I will be, I suggest you try before putting it in the "myth" category. Opinions should be based on practical experimentation, not on rumour.

and again i will say, i only think their is a difference for me because i run 24hr light for veg, this isnt natural but i get .7gram/watt avg.'s i am a novice without co2 so i think this pretty decent, if you have periods of darkness like 18/6 or 20/4 etc it may not do much for you

again this is just my opinion i have never used a dark cycle in veg so i have no idea, would be cool to see someone who is is consistent to try it

Samwell Seed Well said:

and again i will say, i only think their is a difference for me because i run 24hr light for veg, this isnt natural but i get .7gram/watt avg.'s i am a novice without co2 so i think this pretty decent, if you have periods of darkness like 18/6 or 20/4 etc it may not do much for you

again this is just my opinion i have never used a dark cycle in veg so i have no idea, would be cool to see someone who is is consistent to try it

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This is a good point. On my next grow I may well test both. What would be a good test if someone actually did.

1x 18/6 with dark period before switch
1x 24/0 with dark period before switch
1x 18/6 with no dark period.

These things need to be tested really before judgements can be made.

Samwell Seed Well said:

and again i will say, i only think their is a difference for me because i run 24hr light for veg, this isnt natural but i get .7gram/watt avg.'s i am a novice without co2 so i think this pretty decent, if you have periods of darkness like 18/6 or 20/4 etc it may not do much for you

again this is just my opinion i have never used a dark cycle in veg so i have no idea, would be cool to see someone who is is consistent to try it

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why dont you prove it? im open minded, lets see what youve got. if its true you should be able to take 2 clones off the same mother in identical conditions except for giving one a 48 hr dark period and do a side by side and update us regularly on their progress. I've not seen any improvment doing so personally but maybe you are onto something......i think alot of people here would also like to see this experiment as well. Also, just so we are clear dont take any of this post as a personal attack or anything, its not. i really would like to see if you are onto somnething here or not and have an open mind.

i dont have four veg rooms\


one done in 24 without a 48 hr perioid as well would be needed for plecebo effect

you dont have to have 4 veg rooms first one have your veg room 24/0 like you say you always do, now when you flower give one of the 2 clones for the experiment the 48 hr of dark and 1 not. not hard at all. show me it works in 24/0.. you said when you veg 24/0 and give a 48 dark period before you flower it increases flowering compared to another in 24/0 veg mode that is not given a dark period between veg and flower. show me that.....

my next grow is a organics comparision grow so ,i cant do it then i only have two control plants so it will have to wait or you could try it yourself, and the one after that is the Dog Poo grow so, i a little busy already testing things

do your own homework

i mean i have three current journals in my sig already, and one barely being documented cuase it sucks fuck PM

you slackers make me sick

Common sense has certainly gone to the wayside on here lately. How much more yield do you think you can acheive in 2 days?

well . .. . . . thats a good question lol

for me its really more of a its done earlier so either is out ealrier which means same growth in less time, or i leave it in and i cycle the same but the plants are more mature or i can take platns out early and they will be more mature

yield . . .. there are alot of factors that go into that, increase in yield is definetly questionable but when you do 5-6 cycles a yr, a week every time is almost an extra cycle so you tell me what does and extra 5-6 weeks+ mean to you in a yr of indoor

silusbotwin said:

Sounds like a myth to me. Too many people over complicate things. It grows naturally. Try to emulate nature. There are never 48 hour dark periods in nature. Just my opinion. Take it or leave it.

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The beauty of indoor growing is we dont have to emulate nature. Naturally the plants would face all sorts of problems. Wildlife, rain, wind, frost, poor soil, cloudy days, sunny days, and many others. thats why we grow inside, so we dont have to deal with nature. Hence emulating nature is not always the best. You ever seen marijuana grown naturally? Not pretty, compapred to what we pull off indoors. If Jorge says it, odds are....hes right.

I have an extremely open mind and I would love to be proved wrong in this case. I could have a new trick to add to my repertoire. I simply gave my opinion and I stick by it. Samwell you say that we should be the ones to carry out this experiment, but we aren't the ones making the claim. It's the job of the claim maker to prove the nay sayers wrong. Not vice versa. Thats cool that you use it and you think it helps your plants finish early but I AM entitled to my opinion and my opinion is you are full of shit. Maybe you really do believe they finish early from this. Either way, you're entitled to your opinion too, only YOU are the one who must prove YOUR claims. WE are not required to prove YOUR claims.