Day 49 - I used the Fox Farms trio of nutes last week and the results are fantastic. The plants look healthy for the first time.
Day 52 - Another watering with the Fox Farms trio. Buds are fattening nicely.
My two Grandaddy Purple Autos are light green/yellow in color. Is a lack of nitrogen the cause or is it something else? What do you recommend to fix the issue?
Light is too close too soon. Apparently the others did not take the time to look. You got light stress. Should be at 14 to 16 inches in heavy flowering.