Sugar leaves yellowing, rusty spots- guys please help ..
EC:1.1-1.2 / new BlueLab pen calibrated
Tap water : 0.0 EC, i'm adding cal mag till 0.3 -0.4 ec, than nutrients till 0.9 (1ml/ L) and pk (0.25/L) together EC:1.1-1.2
Nutrients: Buddhas Tree
pH:6.0 /new BlueLab pen calibrated
Temp: 25-27 C
Humidity: 45-55 %
Light: HPS 400, 18 inches above plant
COCO, watering daily with 20% run off
Ventilation: 360m3, 1 mixing fan 15 W at top, another at bottom
Plants are flowering and its getting worst every day, sugar leaves are yellowing,tips are brown/ block, edges yellowing,i am getting crazy, leaves drying getting spots, this is coming from TOP to bottom
Black not block :>
I just tested run off it's 1.4 ec
Looks like too much calcium mate. You need to bring that back a bit, I would drop it all together at this stage mate
Lets see the pic first mate and then we will figure it out
Difficult one man, looks like a pottasium def more than anything, but its not usually displayed at the top like that, more the middle leaves..... but pottasium def is most likely, unless you have a fan/ intake vent pointing directly at that plant thats caused wind burn?
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