The pipes arnt actually connected to anything, its just the frame of our shelves! The closest vent is around 2 - 3 feet to the left but the plant is right by the window which can be cold as it gets around -25 Celsius at night. Maybe the spot is to cold?It's not overwatered. That'll be a root problem which will show itself in more leaves in a completely different fashion.
Not fungi either and no need to spray fungicide.
What's that pipe there?
Heat?
Sorce
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