veg too flowering 24 hours to 18 and 6 then too 12 and 12 ?????

somebody had told me too swith my mh bulb too my hps and switch them from 24 hours strait too 18 and 6 for 3 days and then 12 and 12 after that, so they can get use too the dark and the light and not stress out. Is this true?

jolleyrancherpurps said:

Is this true?

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might be, I've never bothered.

my biggest concern is that they might turn hermies on me unless i go to 12 and 12 strait from 24??

somebody please help i dont know what too do????

anybody
??????????????????

Out of hundreds of grow descriptions I've read on this site, only one has actually bothered acclimating to 12/12.

Pretty much everyone just switches 12/12.

A reason to taper it down though is that the amount of needed dark to flower is strain dependent. Some strains need 12, some need less. You can properly dial in a strain using this technique and improve flowering by providing more light assuming the strain can flower with less than 12 hours of dark.

If you are worried, you can always taper it down, it's not going to hurt anything.

cool ty for the info

IMO it wouldnt hurt them goin 18 6 for a few days then 12 /12 i found quickest way to get them in flower is shutting off lights for 24 hrs then go to 12 /12

also why would you waste your energy running plants 24 hrs lights on personally the plant needs darkness ( VERY important )
plants do need rest
im telling you after even running my plants on 18 / 6 there beggin me to shut off the lights when i do lol
know people run 24 hrs when they clone and up to transfering to next size pot but 90 percent of smart growers will then change there light cycle to 18 / 6 to help plant cope with stress i dont know bout others but sure they will chime in saying darkness in veg is just as much important then lights on .
Keep that in mind for your next grow your plant grows in darkness absorbs in light on phase that is my opinion

DrFever said:

also why would you waste your energy running plants 24 hrs lights on personally the plant needs darkness ( VERY important )
plants do need rest

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Actually, there are classifications of plant types that reflect this, with a classification (to which marijuana belongs) for plants that DO NOT require a dark period (I think the classification is C3 or C5, but don't quote me on that, look it up yourself ). There are plenty of papers out there about this, though they are typically in rather scientific horticulturese.
I run 24/0 for most of my veg, cutting back to 18/6 when I need to slow growth (I run perpetual so timing on veg is always a little off based on harvests in the flower room). When I really need to slow growth I cut back to 16/8. This does work quite well for me to slow them. I also inspect roots at every transplant and after harvests I bust it all up and inspect, and I have seen absolutely no evidence of decreased root growth, in fact I have seen the opposite, more root growth with more 24/0 time.

Something I have suspected in the past is that people might see decreased results with 24/0 because they underestimate how needy plants are on 24/0 schedules. I have noticed that beefy vents are needed because there is no dark time oxygen consumption and co2 production. They can take up to twice as many nutrients (though you still have to acclimate them properly). They can take twice as much water. They seem to benefit from a 6+ hour period of decreased temps (around 10f lower).

anyway, hope this info helps

DrFever said:

y the plant needs darkness ( VERY important ) plants do need rest

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no they don't. they're plants not animals they don't tire out and need to sleep.