Orange spots

xmatox

Well-Known Member
I think its leaf spot fungus (LSF-Rust), or PH . However, It doesn't look like any other deficiencies are present that would lead me to believe its PH. Now if it's LSF, the rust you're seeing is a fungi that can be confusing and present itself as a nute lock out or nute burn issue, but it's typically a ventilation problem. The air in your grow is not being replaced well enough. This is usually a situation that involves inadequate exhaust, over abundant intake, and high humidity. Stagnant air and high humidity. Can't know for sure though with info given. If your PH has been ok, then maybe look into LSF.
 

AGbags

Well-Known Member
How about some details? Like all of them.
So seven plants under 600w hps in 8x6 tent 10inch carbon filter air system two intake fans bring air in two circulation fans one floor fan running fox farm Nutes with Humbolt secret and Cal Mag in Ocean Soil this the only plant showing. Spots just on two leaves strain is GG4 it’s in the fourth week of Veg
 

Nutty sKunK

Well-Known Member
So seven plants under 600w hps in 8x6 tent 10inch carbon filter air system two intake fans bring air in two circulation fans one floor fan running fox farm Nutes with Humbolt secret and Cal Mag in Ocean Soil this the only plant showing. Spots just on two leaves strain is GG4 it’s in the fourth week of Veg
Sometimes ime plants throw a wobbly and a deficiency may appear in one leaf. But then it stops.

I only act when multiple leaves are affected and/or is progressing.

Random anomalies do occur.

Keep an eye on it.

But it looks as if it’s middle plant therefore calcium issue/could be an temporary ph imbalance due to feeding.
 
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