Write a detailed guide on how to grow tomatoes from seeds, including tips for soil preparation, watering, and disease prevention. Your response should contain at least 5 paragraphs. Paragraphs are separated with the markdown divider: ***. Highlight at least 2 sections in your answer with markdown, i.e., *highlighted section*. Include keywords *seedlings, fertilize, drainage, pests* in the response. At the end of your response, please explicitly add a postscript starting with *P.S.*.
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