Hello. I have 4 Kali Mist plants 42 Days on 12/12. Something is wrong with them and it gets worse and worse. Here are some pics: Is the browning a deficiency or it's some kind of mold/fungi? It's mainly on one of the plants and it spreads fast... The plants are under 400W HPS, temps are normal, RH is very high (70% - 90%). I'm feeding with Bio-Grow, Bio-Bloom. And with the last watering also - Green Sensation and Epsom salt. Please help. Thanks
Definetly magnesium deficiency bro! Take some epson salt about 1 tablespoon mix with water foliar feed give it 2 days! works like a charm!! had exact same problem pale leaf's rusty brown spotting!!