What's wrong with my plants?

Stoney845

Member
So I have 8 plants in my tent but lately three of the biggest which are autoflower have taken a turn for the worse don't know what's wrong I'm not using nutrients being I'm using a hot soil any help would be great
 

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So I have 8 plants in my tent but lately three of the biggest which are autoflower have taken a turn for the worse don't know what's wrong I'm not using nutrients being I'm using a hot soil any help would be great
The way the leaves are clawed would suggest a nitrogen toxicity.
 
My temps usually range between 70-80°f and humidity around 40% and I'm growing in a hot soil so haven't fed but guess I will give the soil a good flush once it dries out.
 
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