[killadaninja]

by the way 6.5 is fine for your grow medium dont go above that. if youre sure this is a correct reading then up your nutes a bit, always p.h test after you have added youre nutes.mag and zinc defficiancys start lower down the plant iron starts high or at new growth, either way if your plant shows no sign of nute burn up the nute level a little bit. regardless, epson salts in minor quntaties will have no negative affects on your plants and could help your roots if fed to them. if my advice does not work then the only other explanaition is that your root system has become root bound, easily destinguishable from the bright white colour as apposed to a nice creamy yellow colour. message me if further help is required. hope this has been of some help