What's new

Cal mag deficiency?

Oblivi0us

New member
Started getting these rust looking spots on a few leaves closest to the fan. Is this cal mag deficiency?
 

Attachments

  • 1CF2CA63-250A-4C17-B9FF-04787A261711.jpg
    1CF2CA63-250A-4C17-B9FF-04787A261711.jpg
    30.4 KB · Views: 57
  • ACD253A3-125E-452D-824B-BDF00D1FC3A9.jpg
    ACD253A3-125E-452D-824B-BDF00D1FC3A9.jpg
    32.3 KB · Views: 52
D

DNM1

Started getting these rust looking spots on a few leaves closest to the fan. Is this cal mag deficiency?
Potassium,if main leaf vain is green,propably caused by direct air from fan{temp fluctuations)
 

Oblivi0us

New member
Does that mean I need to add a potassium supplement? I checked the ph and it’s at 5.8. Should I up the ph a little bit to get better potassium uptake? I’m using h3ads gh formula , 6ml micro and 9ml bloom. Had to take micro down to 4ml due to some clawing from excess nitrogen and upped the bloom to 10ml. Wondering if the dropped micro took some potassium from them? Or if being in week 4 flower they are using more potassium then before. Thanks for your insight
 
Started getting these rust looking spots on a few leaves closest to the fan. Is this cal mag deficiency?

There’s no such thing as a cal mag deficiency.
Also that looks like a type of fungus. I’ve had that happen to some of my plants that have contact with the coco and even soil. Make sure leaves aren’t touching media’s.
 

Oblivi0us

New member
There’s no such thing as a cal mag deficiency.
Also that looks like a type of fungus. I’ve had that happen to some of my plants that have contact with the coco and even soil. Make sure leaves aren’t touching media’s.

A fungus? That doesn’t sound good. The leaves are definitely not touching any medium as I defoliated everything under the screen. Do I need some kid of spray or is taking the affected leaves off enough to control it? My humidity levels are at 30-50% and I have a dehumidifier in the room. Wonder what would cause the fungus
 
A fungus? That doesn’t sound good. The leaves are definitely not touching any medium as I defoliated everything under the screen. Do I need some kid of spray or is taking the affected leaves off enough to control it? My humidity levels are at 30-50% and I have a dehumidifier in the room. Wonder what would cause the fungus

This type of “fungus” ,what I think it is, usually doesn’t spread. I’ve never seen it on buds. I wouldn’t worry about it too much. If someone knows what it actually is please chime in. I don’t think it’s a deficiency honestly. I could be wrong tho.
 

ridoo

Active member
Started getting these rust looking spots on a few leaves closest to the fan. Is this cal mag deficiency?

Hi
sorry but pics aren't very clear

can you make pics of the under-leaf side and same from over but more clarity please

have you well check for "intruders", bugs, little moving spot... ? use a lens if you have one (every grower should have a lens for close inspection)
 

Latest posts

Latest posts

Top