Hi gcity can anyone help my with this one? I have 2 critical kush that are 3 weeks into flower and have slight brown tips and some of the lower leaves have dry brown patches on them. Also some of the older leaves on the plant(original fan leaves) are going a very pale colour, what could this be? I have a feeling that it is a nitrogen deficiency or heat stress as my temps sometimes reach 33 degrees celcius, I know this is way too hot but can not get another fan for a few weeks! Any advise is welcome and appreciated thanks!
May be more than nitrogen. Fill out the below form and we'll see what we can do. http://forum.grasscity.com/sick-plants-problems/226015-when-posting-your-sick-plants-questions.html?view=getnewpost Also, get us some close up non hps pix if you can.