Fan leaves are browning at the tip/turning up and feel crispy. and seems to be moving up the plant. With the same browning at the tips.. Roots are slightly brown and im pretty sure its not nute stained. Temp=75 RH=50% Nutes=400 and i just changed the reservoir 4days ago when the problem was minimal. PLEASE PLEASE HELP ME SAVE MY BABY GIRL> I use FloraNova Grow, Liquid Seaweed/Sm-90 as a foliage spray.