Yellow leaves and drooping

[papatuna]

Okay so before the weekend my plants were looking healthy as fuck. I am using a hydroponics system. I recently transferred my plants from my veg chamber to my flower chamber . Each chamber uses a different light
Veg chamber 400 watt/2000 k light to a 125 watt /6400 light. These plants are prob 6 weeks old and are autoflower . When I moved them I did a couple things at once and prob should of taken things slower to identify what’s wrong with them. When I transferred chambers I also trained them. Right now all the plants are drooping and one plant is showing yellowing.
I have done a ph test and found it was at 6.7 and just recently moved it down to 6.1. Did I overwater? Or was my ph to high and they couldn’t nt absorb nutes.?! Help please this is my first cycle and it makes me sad when I see my girls sad

 

[Herby Paisley]

Hi PapaTuna ... I seen in your picture that your temp is at 29c in your grow space, Your plants maybe stressing a lil from the heat do you have a fan oscillating in there and an exhaust fan venting the warm air out? They could also be suffering a lil transplant shock too and your ph could have started a nute lockout. Just curious why you have two separate grow chambers for auto flower plants they don't bloom by light cycle they bloom by maturity. Could save your self some space if your going to just grow autos.

 

[HydroponicFireman]

Heat, overwatering and transplanting can make leaves droop and even drop off.

 

[013]

I’m gonna go ahead and ask the obvious but what the heck... why do you veg under a 400 watt light and then reduce down to a 125 watt for flower?.... that’s bass ackwards from the way it should be.