hey, I would advise maybe trying to avoid adding any nutrients until much later in the grow cycle. ESPECIALLY since you are using soil. Even in a very basic soil, there is enough nutrients for about the first month of growth. I would suggest looking into the bookTeaming with Microbes, or just searching more on creating a soil food web, rather than trying to "feed" your plants. "feeding" is for hydroponics/synthetic grows, whereas in a natural soil grow (if that is what you are seeking), one should try to build an ecosystem where microbial life thrives, and breaks down nutrients in a usable form for the plant, at exactly when the plant needs it. If these are photoperiods, try to dial in your next container size with ingredients that aren't too hot, and look into amendments that soil life will break down naturally over time. If these are autoflowers, they need much less nutrients than photoperiods in general, so a basic organic soil mix with few amendments, great drainage, and an area for soil life to thrive, the plants will do exactly what they were meant to :) Peace and good luck
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