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?
In our cannabis growers forum, we have guides to growing cannabis, cannabis grow dairies that cover growing weed in hydroponics, soil and coco. Find the help you need, by either, using the search box, or asking for help in the forum.
Our cannabis growers website also has competitions where you can win free weed seeds. As a member you will also have discount codes for cannabis seeds, and LED grow Lighting.
Our Cannabis Growers Forum is for educational purposes and we encourage our members to check their country of residence legislation before germinating a marijuana seed.
This site is here because we want to help you grow your own cannabis for personal use. Therefore, any member who is suspected of growing cannabis for commercial gains will be banned immediately.
Please read our forum rules, and enjoy the site.
Find us on all social networks! Just search for Percys Grow Room