{"product_id":"alternanthera-cardinalis-plante-rouge-aquarium","title":"Alternanthera cardinalis","description":"\u003ch3\u003e\u003cspan style=\"color: #3d85c6;\"\u003e\u003cem\u003e\u003cstrong\u003e(set of 3 already colored stems)\u003c\/strong\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cstyle\u003e\n.content-container {\n  font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, sans-serif;\n  color: #2d3748;\n  line-height: 1.7;\n  max-width: 850px;\n  margin: 0 auto;\n  padding: 2rem 1.5rem;\n}\n\n.content-container h1,\n.content-container h2 {\n  font-size: 2.4rem;\n  font-weight: 600;\n  margin: 0 0 1.5rem 0;\n  color: #1a202c;\n  line-height: 1.3;\n}\n\n.content-container h3 {\n  font-size: 2rem;\n  font-weight: 600;\n  margin: 2rem 0 1rem 0;\n  color: #2d3748;\n  line-height: 1.4;\n}\n\n.content-container p {\n  margin-bottom: 1.2rem;\n  font-size: 1.6rem;\n  line-height: 1.6;\n  color: #4a5568;\n}\n\n.bullet-list {\n  background: #f8f9fa;\n  border: 1px solid #e9ecef;\n  padding: 2rem;\n  border-radius: 8px;\n  margin: 1.5rem 0;\n}\n\n.bullet-list ul {\n  list-style: none;\n  padding: 0;\n  margin: 0;\n}\n\n.bullet-list li {\n  position: relative;\n  padding-left: 2.5rem;\n  margin-bottom: 1rem;\n  font-size: 1.5rem;\n  line-height: 1.6;\n  color: #495057;\n}\n\n.bullet-list li:before {\n  content: \"✅ \";\n  position: absolute;\n  left: 0;\n  color: #28a745;\n  font-size: 1.8rem;\n  font-weight: bold;\n}\n\n.bullet-list li:last-child {\n  margin-bottom: 0;\n}\n\n\/* Emojis contextuels pour les conseils de plantation *\/\n.bullet-list.conseils li:nth-child(1):before { content: \"🪨 \"; }\n.bullet-list.conseils li:nth-child(2):before { content: \"💡 \"; }\n.bullet-list.conseils li:nth-child(3):before { content: \"💧 \"; }\n.bullet-list.conseils li:nth-child(4):before { content: \"🌿 \"; }\n.bullet-list.conseils li:nth-child(5):before { content: \"✂️ \"; }\n.bullet-list.conseils li:nth-child(6):before { content: \"🌡️ \"; }\n\n\/* Emojis contextuels pour les usages *\/\n.bullet-list.usages li:nth-child(1):before { content: \"🐠 \"; }\n.bullet-list.usages li:nth-child(2):before { content: \"🦐 \"; }\n.bullet-list.usages li:nth-child(3):before { content: \"🎨 \"; }\n.bullet-list.usages li:nth-child(4):before { content: \"🌱 \"; }\n\n.faq-section {\n  background: #f8f9fa;\n  border: 1px solid #e9ecef;\n  border-radius: 8px;\n  padding: 2rem;\n  margin: 2rem 0;\n}\n\n.faq-item {\n  margin-bottom: 1.5rem;\n  padding-bottom: 1.5rem;\n  border-bottom: 1px solid #e9ecef;\n}\n\n.faq-item:last-child {\n  margin-bottom: 0;\n  padding-bottom: 0;\n  border-bottom: none;\n}\n\n.faq-question {\n  font-weight: 600;\n  color: #1a202c;\n  margin-bottom: 0.8rem;\n  font-size: 1.5rem;\n}\n\n.faq-answer {\n  color: #4a5568;\n  font-size: 1.4rem;\n  line-height: 1.6;\n  margin: 0;\n}\n\n@media (max-width: 768px) {\n  .content-container {\n    padding: 1.5rem 1rem;\n  }\n  \n  .content-container h1,\n  .content-container h2 {\n    font-size: 2rem;\n  }\n  \n  .content-container h3 {\n    font-size: 1.8rem;\n  }\n  \n  .bullet-list {\n    padding: 1.5rem;\n  }\n  \n  .bullet-list li {\n    font-size: 1.4rem;\n  }\n}\n\u003c\/style\u003e\n\u003cdiv class=\"content-container\"\u003e\n\u003ch1\u003e\n\u003cem\u003eAlternanthera cardinalis\u003c\/em\u003e: red and easy plant for natural aquariums\u003c\/h1\u003e\n\u003ch2\u003eA red plant that brings contrast\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eAlternanthera cardinalis\u003c\/em\u003e is one of the best plants to bring red and depth to a layout. The top of the leaves remains a bit greener, while the underside turns pink-red, creating very visible shades and gradients in a bush.\u003c\/p\u003e\n\u003cp\u003eEasy to succeed, suitable for low-tech tanks and can be propagated endlessly.\u003c\/p\u003e\n\u003ch2\u003eWhy choose \u003cem\u003eAlternanthera cardinalis\u003c\/em\u003e?\u003c\/h2\u003e\n\u003cdiv class=\"bullet-list\"\u003e\n\u003cul\u003e\n\u003cli\u003eMore intense red color under strong light, the contrast is immediate.\u003c\/li\u003e\n\u003cli\u003eLow-tech compatible: grows without CO2 and no fertilizer or technical substrate needed.\u003c\/li\u003e\n\u003cli\u003eUltra-simple propagation (cut and replant tips, cuttings, horizontal layering).\u003c\/li\u003e\n\u003cli\u003eBackground and middle: creates beautiful dense and structuring bushes.\u003c\/li\u003e\n\u003cli\u003eRobust plant for beginners (simple substrate, very flexible parameters).\u003c\/li\u003e\n\u003cli\u003eVery valuable in aquascaping to create focal points.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eGrowing tips (simple and effective)\u003c\/h2\u003e\n\u003cdiv class=\"bullet-list conseils\"\u003e\n\u003cul\u003e\n\u003cli\u003eLight: medium to strong (the stronger, the redder and more compact).\u003c\/li\u003e\n\u003cli\u003eSubstrate: simple sand is enough. With fish, shrimp, or other animals present, no fertilizer needed. The iron in their waste is also sufficient.\u003c\/li\u003e\n\u003cli\u003eCO2: completely unnecessary in low-tech. In fact, fish or shrimp respiration provides enough.\u003c\/li\u003e\n\u003cli\u003eParameters: fresh to moderately hard water. A truly tolerant plant if the water is not extreme.\u003c\/li\u003e\n\u003cli\u003eSize: cut above a node and replant the tip; the base will produce new shoots.\u003c\/li\u003e\n\u003cli\u003eTemperature: does not survive winter outdoors. Aquarium plant, even unheated.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eUse in aquascaping\u003c\/h2\u003e\n\u003cdiv class=\"bullet-list usages\"\u003e\n\u003cul\u003e\n\u003cli\u003eStrong contrasts with green masses. Nuanced red, slightly metallic.\u003c\/li\u003e\n\u003cli\u003eBackground placement to give depth, or in the middle to stand out on a green background.\u003c\/li\u003e\n\u003cli\u003eRegular trimming for a dense bush and a more compact silhouette. Remember to replant the cut parts!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAdvantages in low-tech aquariums\u003c\/h2\u003e\n\u003cdiv class=\"bullet-list\"\u003e\n\u003cul\u003e\n\u003cli\u003eResistant, versatile, and adaptable (no technical substrate required).\u003c\/li\u003e\n\u003cli\u003eRed color without CO2 or added iron if lighting is sufficient.\u003c\/li\u003e\n\u003cli\u003eEasy propagation: economical and quick maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eFAQ - \u003cem\u003eAlternanthera cardinalis\u003c\/em\u003e\n\u003c\/h2\u003e\n\u003cdiv class=\"faq-section\"\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003eIs CO2 needed to get bright red?\u003c\/div\u003e\n\u003cp class=\"faq-answer\"\u003eNo, but strong light further enhances the color.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003eCan it live in low-tech setups?\u003c\/div\u003e\n\u003cp class=\"faq-answer\"\u003eYes. It grows well without CO2, provided there is enough light. The substrate does not matter much.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003eHow to trim it for a dense bush?\u003c\/div\u003e\n\u003cp class=\"faq-answer\"\u003eCut and replant the tops. The base will sprout. Repeat to thicken the cluster.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003eWhy is my Alternanthera turning green?\u003c\/div\u003e\n\u003cp class=\"faq-answer\"\u003eOften insufficient lighting or lack of iron (for example, in the absence of fish): increase light and introduce animals (fish, shrimp, microfauna). In rare cases, add an iron supplement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cdiv class=\"faq-question\"\u003eDo goldfish eat it?\u003c\/div\u003e\n\u003cp class=\"faq-answer\"\u003eSome herbivorous fish may nibble its thin leaves: be cautious in affected tanks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAdditional information\u003c\/h2\u003e\n\u003cdiv class=\"bullet-list\"\u003e\n\u003cul\u003e\n\u003cli\u003eScientific name: \u003cem\u003eAlternanthera cardinalis\u003c\/em\u003e\n\u003c\/li\u003e\n\u003cli\u003ePlant type: red stem plant\u003c\/li\u003e\n\u003cli\u003eLight: medium to strong, its red color is enhanced by light intensity.\u003c\/li\u003e\n\u003cli\u003eTemperature: 18 to 28°C. It does not tolerate cold: reserved for the aquarium, even if unheated.\u003c\/li\u003e\n\u003cli\u003eSize: 30 to 50 cm in aquarium (can emerge in an open tank).\u003c\/li\u003e\n\u003cli\u003ePackaging: 3 stems (approximate weight: 20 g).\u003c\/li\u003e\n\u003cli\u003eGuarantee: without rock wool or any artificial substrate of any kind.\u003c\/li\u003e\n\u003cli\u003eRecommendation: As a precaution, please never release this plant into the wild. It is not native to our regions and should obviously not naturalize, but we must protect our ecosystems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Aquazolla","offers":[{"title":"Default Title","offer_id":50904102207835,"sku":"ALTER-1","price":3.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2392\/8975\/files\/Plante_aquatique_Alternanthera_en_sable.jpg?v=1769877460","url":"https:\/\/aquazolla.com\/en-de\/products\/alternanthera-cardinalis-rote-pflanze-aquarium","provider":"Aquazolla","version":"1.0","type":"link"}