Drooping leaves (looks sad), as well as some yellowing of leaves; although with my first grow and over watering mistake, I had also been accompanied by under-feeding so it was completely yellow from lack of nutrients, was growing in promix peatmoss. I'll let someone answer your nutrient question, I'm as experienced as you are with them, (none). You can find those symptoms from simple google search.
I was babying and watering every other day or so instead of just letting her dry to light weight and then water till runoff.