Hi! Temp is 83f Strain : White widow Medium : HP Promix with mycorazine light : 400W HPS Light distance : 19'' Watering Frequency : every 3-4 days or when the pot is light AF Water PH : 6.5 Water Drainage PH : 6.0 Humidity 20-30% Age : 2 weeks and 1 day so heres my issue : Look at the photo, brown spots have started to appear on the older leaves. What can cause this? I was thinking either a Cal Mag problem (lockout or deficiency) and or a PH problem. I need help fast as I do not want to see this problem grow. (lol) Thanks!
Negative. Today i'm going to go at the local hydro store and buy some. Also, it seems that the lower leaves are turning yellow a little and becoming brittle/dry. Could this be a potassium issue?