Not Sure where he's at but so you can know a bit more.....
I can tell you he is having heat issues as to why he has it down.
I said if you had issues and those leaves were damaged (dried up and crinkled) they are likely not going to restore..so don't worry about them..the rest of the plant is looking fine...
I work with him and recommended he come to you guys for more guidance
I told him exactly the same thing...Overwatering is or rather was his issue...he was watering EVERYday.
I told him no..stop..cause they were drooping every day at work when he reported..
He told me he was having heat issues so he dimmed them to 600w.
he states he hasn't fed now for 2 days and it's worsening so I said yo...Post up and see what you guys have to add in on the conversation...
He told me he buys his water Already PH'ed. and it's at 5.5-6