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1.
▲
What elements does a plant need to grow?
(github.com/hydromisc)
339 points
lathyrus_long
5 years ago
102 comments
2.
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Show HN: Open hardware for hydroponic automation (EC, pH, irrigation, etc.)
(github.com/hydromisc)
10 points
lathyrus_long
5 years ago
1 comment