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Openai/6957b7f1-7b1c-8001-afad-2fc4124c1caa
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==== 在很多會變紅的莖草(例如 Rotala 類、Ludwigia arcuata/brevipes、Limnophila aromatica 等),2Hr Aquarist 的說法核心是: ==== * 氮是葉綠素與生長量最關鍵的營養之一 * 當水柱 NO₃ 偏低時,某些紅草會出現「葉綠素形成延遲/下降」→ 綠色變少 * 在高光環境下,植物會增加/顯露更多「保護性與呈色的色素」(你看到的紅/橘/粉) 因此在高光 + 足夠 CO₂ + 低 NO₃時,紅草更容易上到極致色階。The 2Hr Aquarist<ref>{{cite web|title=The 2Hr Aquarist|url=https://www.2hraquarist.com/blogs/fertilize-planted-tank/planted-tank-fertilizing-101?srsltid=AfmBOoqNmqFzHQY3d26-49CTNDg2qAsBF3ZwI-CSejfdZAWL2gI9S6OA|publisher=The 2Hr Aquarist|access-date=2026-01-03}}</ref> 2Hr Aquarist 也特別強調他們喜歡「NO₃ 限制但不要走極端」:低到能出色,但仍保有足夠營養讓整缸穩定、能養各種草。The 2Hr Aquarist<ref>{{cite web|title=The 2Hr Aquarist|url=https://www.2hraquarist.com/blogs/freshwater-aquarium-plants-guide/how-to-grow-red-plants?srsltid=AfmBOoppz062Ukj6srNkj423Luc1Gd6NAT501eACgThMyqzA5NgqpQ3r|publisher=The 2Hr Aquarist|access-date=2026-01-03}}</ref>
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