critical neville haze

My autos are between 13 and 16 days old and the leaves on some are yellowing and I need help with diagnosis. I am feeding then 1/2 tsp of grow big fox farm and if they can handel it 2 to 3 tsp next feeding I usually water with food every other time like stated on the food chart . I just really...

SeedBank : delicious Strain: Critical Neville haze Did it autoflower?: Yes Soil/hydro: Kindsoil with biobizz light mix Nutes: None Light (kind and schedule): Mars 300, mars reflector 48x5 From seed to harvest date: 69 days Dry Yield: less than a oz. Still curing High/Effect...