I had one issue which is funny because I did the same thing with one of my last grows. Got a nute lockout or deficiency from either wrong ph of the water I used, after sitting for 24 hrs I didn't recheck, or maybe the water temp versus the mediums temp at the time, or I mixed nutes incorrectly. Either qtys or the order in which I mixed. I believe I have corrected the issue now. I will water without food in 2 days, then continue with my bottled nutes. Lesson learned. Have to stay thorough.
Is it just me or do you get a little depressed when a plant comes to an end. Super happy but get down knowing she's reached her time. Lol Maybe I'm a softy idk