My Plants Get Droopy at the End of Light Cycles. Help!

Souramnesia said:

I guess by now everybody realized it's your dli...the plants couldn't use that much light in that time frame. Dim your lights a little til she can use the light for the whole lights on cycle. Hard to do running different strains in the same grow space tho.

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Its called circadian rhythm....I've been growing for 40+ years and have had MANY strains start their SLEEP PATTERN an hour or so early soon as you induce flower...not all do it, but its been my experience that strains that have been around for a while and grown in artificial conditions have GOTTEN use to that 12/12 light cycle so much, that they WILL start ANTICIPATING lights out after 12 hours....
It will basically be UNNOTICEABLE by the time your 2-3 into flower.......DONT GET IT CONFUSED WITH TOO STRONG of light....That too will cause leaves to SHY AWAY after so long...But circadian rhythm is like clock work...Every day and hour or so before lights out....If thats what your experiencing, it will stop in a cpl weeks....Dont worry about it....YT

Never to old for
A comment

MrStickyScissors said:

Never to old for
A comment

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yeah, ITS OLD....I got a notification that there were comments to this thread.(Cpl hours b4 my
response)..SO SOMEHOW, SOMEWHERE, I figured someone wasnt quite sure about what was going on...LOL....Circadian Rhythm is an interesting thing, so I figured I'D STIR THE POT back up...LOL

My girl was doing this and I raised my light a few inches and it stopped dropping towards the end of the light cycle.

I have a Miami mami in veg that looks ugly af at the end of its light period. Looks fine by the time they come back on though. Dialed my lights back to 16/8 though figure that should at least put my mind at ease.

yankeetransplant said:

yeah, ITS OLD....I got a notification that there were comments to this thread.(Cpl hours b4 my
response)..SO SOMEHOW, SOMEWHERE, I figured someone wasnt quite sure about what was going on...LOL....Circadian Rhythm is an interesting thing, so I figured I'D STIR THE POT back up...LOL

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Im a noob and googled this. This thread has been very helpful, Thank You

TurtlePooIsCool said:

Im a noob and googled this. This thread has been very helpful, Thank You

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In some cases though, if heat or strong light causing it...Some ppl go from VEG hours to their BLOOM hours WHILE increasing light intensities in hopes to produce the fattest flowers..
But MANY TIMES IT IS CIRCADIAN RHYTHM....It quite real as you discovered and has been studies for A VERY LONG TIME in the botanical world....
Here is a section from PharmaSeeds on the subject, and it shows where you can find some more detailed info from this 'Stewart Maxwell' guy who studied the effects on cannabis...VERY INTERESTING lighting regime suggestions to up yields...