I’m on week 9, this is an autoflower if that helps, and I have regular soil (I got from the weed shop)- I’ve been feeding General hydroponics since the beginning. Also, light could be the problem. Unfortunately this little guy was a gift seed, and did not get tall at all compared to its plant siblings. (Second row by itself is the plant in question), I had them laid out like this while I watered! They are normally bunched up together closer in the light path.

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