Your plants don't look that bad....I was taper off on the nutrients and invest in a nutrient tester so that you don't have to play the guessing game. Your EC should be maintained at 1.7-1.9.
I think there not gettin much better theyre in the dark right now but before they went it looked like the leaves were drooping more I sprayed them with water though is that good or bad? (used a squirt bottle to spray the leaves)