In my experience, FFOF is not too “hot” to cause those issues with nutrients alone .
Are you 100% sure your pH meter is reasonably calibrated? I found my meter had gradually gone completely out of whack and was reading 0.8 pH too high. Which means in reality I was pHing down to 5.5 in some cases. Way too acidic.
Being an auto I would not get expectations high for the plant that got sick. I expect you will save her…good advice up here…but yield will suffer greatly. Can be some fire smoke but in my journeys with auto a bad start stunts them. Just my opinion only and probably wrong. I never pullem unless they die or are males. Good learning plants when sick.
My plant is kinda wilting but my question is "Does the lights need to be turned off and on or can they stay on all the time?
5 days and 4 nodes already?? WOW! Or even 11 days WOW…
That’s some Chunky looking soil too. Funky leaves…Good luck bro! 
Update on the Wilted seedling or the “SICK “ one. It has recovered, I think, nicely. Some funny leaves at the spots they were before but sprouting new growth and leaves. They are pictured left to right, wilted one far left. I really did not have a overwatering situation imo…I e had some issues with each Zkittles seed I’ve started, one turn male, the other died after transplant, with no obvious reason. So maybe a bad batch of seeds or bad genes. Anyway, I won’t buy Zkittles any more unless this one has a good recovery and yield. Thanks for the advice
