Plant problem need help diagnosing

dan.knell

Active Member
so im running a mh 400w and i have a 2 foot tall hash plat and some leaves are curling down and prowning on the tips and edges(with a side of drying out). Some leaves are also yellowing and drying and dying. Im watering at about 900ppm temp in room is 72-75 humidity is 40-60 %. Here is a pic of one of the leaves.
 

Attachments

Top