Does I happen with too high or too low of a ph sorry for the lack of info but plants in a 3 gal container half FFOF and half light warrior not sure about the ph right now I have liquid,paper,and probe type ph testers the ph last time I checked was 6.5 roughly and that was 3 days ago I just watered it today with no nutes but I've been using the FF line of nutes at 1/4 strength all my plants are in the same mixture of soil and they all get the same dosage of nutes plants are under cfl bulbs about 20 and color Is 2700k all together I have 35000 lumens from cfl I plan on Gettin hps soon just not enoughnmoney now the strain is twilight for that plant in particular soil dries about very 3-4 days and I only use nutes once a week everyother watering any more info u need justask and I will post may not be a big problem now but I don't want it to turn into a bigger problem down the road