Yeah, it's on the smaller side. See the two plants on the right in this picture? That's two autos at 35 days in my tent.
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Edit: stupid site posted this before I was done typing. As Matty mentioned, you need more light if you want to yield anything decent off this plant. Get that light real close too. Also, you need to know what your soil is to achieve good results. The white things are perlite which is just for drainage. You need to know what's in there feeding your plants.