Indoor Electric Gelato indoor

[VeryHairyMary420]

Update 6/26/2020

today I transplanted them into 2gallon Pots. I used Fox Farms coco loco soil. Below are their pre-transplant measurements:

A) 3in B) 1 3/4in C) 3 1/4in D) 2 1/2in E) 2 1/2in

can anyone recommend some nutrients or additives I should consider? It’s been a while since my last grow so I’m a little rusty. Thank you in advance

 

[VeryHairyMary420]

So only 3 survived and they’re barely hanging on. Can anyone tell me what’s going on? Soil ph is 6.5 water run off is 7.0 they’re each under a 1200w led. Temps are between 70F-80F I’ve been feeding Big Bud nutes per directions on bottle. They started yellowing and crumbling up about 4 weeks ago (before I started nutes). I transitioned the lights to 12/12 and they seem to be flowering alright. What’s going on and what do I need to get to save them?! Thanks in advance