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Thanks for reading this...

Having first sprouted between 4 and 5 days ago, my baby-girls have been the same teensie size for about 3 or 4 days now. These are my first autoflowers, & I had rationalized that they're "building energy" to explode any day now, but now the White Widow has 1/2 of one leaf dead, the others appear to be getting deeper, darker coloring (stripes) on their baby-leaves, and I'm worried.

Any helpful advice, thoughts, and opinions are welcomed. Thanks...

Could this be a Phosphorus deficiency? I've been using distilled water with only a tiny bit of organic ferts at 2-4-1. A few posts here and there suggest that "Phosphorus helps build strong roots...", "highest levels of phosphorus are used during germination, seedling growth...", and that "leaves turn deep green on a uniformly smaller, stunted plant. Leaves show brown or purple spots...", which might be seen in the photos I've posted above. Can anyone offer some solid wisdom or advice?