Leaves drooping?

[shotgun10111]

Hey guys, I got two Think Different one 34 and 28 days old and a Black Jack Herer 27 days old growing and after about 13 hours the TD's leaves start to droop, the Black Jack doesn't then when the lights come back on they look healthy as hell for the next 13 or so hours then they go back to drooping.
Here is the run down of my setup 5 gallon air pots, soil is Pro-mix with extra perlite, lights are 8 bulb and 6 bulb T-5 batboy, lights on 20-4 using Tangs AN feeding schedule. PH going in has been between 6.5 and 6.7.
I have grown 4 other TD's that didn't act like these ones but they were grown in soil and nutes.
Any help on what to do would be much appreciated. Thanks and peace

 

[AndyBotwin]

As long as the plants are otherwise healthy, I wouldn't worry too much about it. I put a webcam in my tent a while ago and started monitoring my plants more closely, and found that certain ones would droop in anticipation of the coming dark period while others didn't. Even two plants of the same strain grown side by side will sometimes behave differently. I have also noticed the drooping at the end of the day with certain outdoor plants that I have grown. All finished healthy with a good harvest.

Unless you are seeing permanent drooping that may indicate watering or feeding problems, I wouldn't be too concerned.

 

[shotgun10111]

Thanks Andy for the quick response I'll just let them do their thing then. Peace