mmmmh never heard of increaseing the light but yes give only water for the last 2 weeks its called flushing your plants it gets rid of most or all of the ferts and nutes so you dont have a nasty tasting smoke

do you own test take one plant and go with the 16 and let us know if it works

I would stick with the tried and true method of 12/12 myself.

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How many days are u in flowering ?

thanx bro 4 explaining flushing but ive been doing this for around 14-15 yrs lol with over a few hundred under the belt but thanks anyway bro knowlage is power i hear what ur saying, just was intrested if anyone besides this canadian guy has done this the increased light is only in the last 2 wks, i havnt done it my self as 12/12 seems more reliable but this guy grows for bc bud depot so he isnt just an average joe or maybe he is lol thankx all the same 4 tha reply

Hey bro-

Theoretically it makes sense the plant uses the light time to grow and in this case bud....I just decided to do it I am doign 15 hours thereabouts on some Master Kush which I inadvertently threw back to 10 hours to finish early when it hadn't even really begun budding.

Set me back two weeks..so now I am going to increase the light so they cn finish sooner less days to finish.

It makes complete sense....I've heard of people doing a continuous 14/10 through flowering with great effect.

I'lll let you know my results over the next 7 dasy to harvest.

i've heard of this... there was a lot of info on it at overgrow... (i'm still sad its gone)

apparently, the theory is that once you start to flower the plant with 12/12, after X weeks of 12/12 if you give it 18/6 or 24/0, it will take the same X weeks to revert back to veg.... so in the last 2 weeks, if you give it the veg lighting schedule you can have no fear that it will go back into veg because its almost done flowering (it would day 6 weeks of veg lights to get it back into veg mode)...

a buddy of mine tried this and flipped it to the veg lighting too early, and he went the last 2 weeks at veg photoperiod, but then decided to let them go a little longer cuz they didnt quite look done... then in the 3rd week they made funny looking leaves pop out of all of the bud, and he got a bunch of bananas...

he might have gotten a little more weight, but it was funny looking bud

on a seed site it rcomend less light for last to weeks even says try with no light for last 2 so be careful they dont start to veg on ye

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i have just experienced this very same problem with my granddaddy kush and blueberry clones. they were left under the hps (600w, 12/12) light by accident (behind the larger plants), and budded to early.
after the harvest this was discovered, and they were placed back under the metal halide (400w, 18/6). after only a week much of the bud weight was lost to the vegetation processes, and those "banana" (quite an accurate observation) leaves begun to sprout. they almost resembled the first vegetative node leaves on a seedling; yet they lacked and ridge definition along the edges.
i have since killed the original plants (not before cloning of course). i believe that mistake will serve as an experiment to see if the light stresses will cause the 3rd generation clones to hermie.
i do not suggest increasing the light cycle at the end of budding based on my personal experiences. however i have found that a 72hr dark cycle immediately before harvest can dramatically increase the cannabinoid resin production within the tricombs. in some cases up to 25%!!!
i wish you the best of luck!

Hey verysexybob, nice post. quick question: do you water your plants at all during that last 72 hour dark period? Or do you let them just suck all the water that's left up into the buds? Thanks.