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1. What elements does a plant need to grow? (github.com/hydromisc) 339 points by lathyrus_long on Nov 16, 2021 | past | 102 comments 2. Show HN: Open hardware for hydroponic automation (EC, pH, irrigation, etc.) (github.com/hydromisc) 10 points by lathyrus_long on July 7, 2021 | past | 1 comment

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