Diagnosis help

[RayDawg24]

I have 4 nice plants in my 48×48×80 tent running a marshydro ts3000 going hitting 450 watts wide band full spectrum led im running 50% for my veg cycle but I ran into an issue with my plant on the left the bigest one the lower two big fan leaves look weird and the top leaves are green but are sorta cuped and idk if you wna say wilting but they don't look like that one plant is 100% healthy my humidity in my tent is always around 70%to80 but when I turn on my exhaust fan to take out the humidity just that one plant looks even more sad I have a AC INFINITY CLOUDLINE T6 I don't even use most of the time its getting me fusterated cause the other girls seem do be loving life in the tent ima drop a few pics down be low the one on the left side the big one is the one thats had a cold or flu or something any help or tips or anything is welcome!

 

[NuttyProfessor]

Is this coco or soil , looks like coco ,
how do you water
feed
heat
ph
etc etc

 

[RayDawg24]

Here is the stuff I'm using

 

[RayDawg24]

I feed 1 time a week this stuff im using retains alot of water..I'm currently feeding them
RECHARGE
FLORA VEG
AND TERPINATOR
I AM GOING TO BE ADDING KELP BLAST IN THE PICTURE IN AT SEEDLINGS I WAS JUST GIVEING THEM FLORA MICRO AND MYCO+WITH A LITTLE BIO ROOT HEAT STAYS AROUND 85 TO 70 AND HUMITY AT AROUND 70-60 AT NIGHT TEMPS DROP TO 60 RANGE TO LIGHTS FIRE BACK UP AY 5AM IM ON A 18-6 LIGHT SETTING.. I DO NOT PH MY SOLUTION LATER ON IN FLOWER I WILL BE USEING FLOA BLOOM WITH HEAVY FEEDING OF KELP BLAST AND TERPINATOR