It looks and sounds like you need water. Test the weight by lifting, water and see if the plant recovers. If it does, you now know how light it is when it is thirsty.
Be sure to water slowly and completely then let it dry before doing it again. When you water slowly the soil will absorb the water rather than it just running through.
LOL It looks a ton better. 
I haven’t ever used soil. Just coco. I know that with it. When I transplant. I need a few weeks at the least to get the roots to grow out. other wise. They are going to just want to grow straight down. leaving a plant that will easily start leaning. I switched to just the coco with out the clay balls awhile ago. I have the golf balls in most of the pots this grow. No real difference with or with out them here. You plants are looking great there.
I am super interested in hydroponics! I may try that after a few cracks at this method!
I put as much light as I can on my plants.
So the light closer? Or is further away making more light for it? I assume the closer the light the brighter it seems to the plants?
That is correct. I set my lights using a PAR meter. I shoot for a ppfd of over 900.
I would move the lights much closer. Just not so close that the heat of the lights is felt by the plants.
That is how I would do it.
I downloaded the LUX light meter for my phone and tested the light.
It said right at leaf level it is 107,194LUX/8850.4FC
Is this ok?
I don’t know…PAR is the measure of light that plants respond to. LUX is the measure of light the people can see.
I use a quantum sensor PAR meter for my light measurements and to set my light heights.
Perhaps @kaptain3d @kellydans @Oldguy @OGIncognito or @dbrn32 can answer that.
I downloaded a ppfd meter and it said at light level is was 1850ppfd roughly (not so steady hands) at the center of the light, at leaf level
That number seems to be very, very high. I suspect that the conversion is incorrect. We will see what others have to say.
My readings with a PAR meter run from 850 at the SCROG screen to 1600 at the tops of colas late in flower. The sun puts out 2000 to 2200 ppfd mid day.
Take your ppfd app outside and see what reading you get from the sun.
It was saying it was around ppfd in direct sunlight was 2250ish.
Here are a few more info lics about my light if it helps?
What is the wattage on the name plate? How much current does it draw at 120 volts?
