i'd stop everything you are doing and do this.....RO water.....Cal Mag 200ppm and Grow nutes 200 ppm....ph 5.6-6.2. You've got everything but the kitchen sink in there.

Mr Droopy looks like he is circling the drain there so maybe you shouldn't have named him.

Water him with new mixture as well. I think you dried him up....hopefully not too much.

Good luck.