{"product_id":"black-longspine-sea-urchin-algae-eater","title":"Black Longspine Sea Urchin (Algae Eater)","description":"\u003ch2 style=\"margin: 0 0 12px 0; font-weight: 800; font-size: 28px; letter-spacing: -0.3px; color: #123844;\"\u003eBlack Longspine Sea Urchin\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 12px 0; color: #22323a; line-height: 1.7;\"\u003eBlack Longspine Sea Urchins \u003cem\u003e(Diadema setosum)\u003c\/em\u003e are highly effective algae-grazing invertebrates known for their long, slender spines and constant movement across rockwork and substrate. Their active grazing behavior helps control nuisance algae, making them a powerful addition to reef aquariums struggling with algae buildup.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 18px 0; color: #22323a; line-height: 1.7;\"\u003eThese urchins continuously roam the aquarium, consuming \u003cstrong\u003efilm algae, hair algae, and organic buildup\u003c\/strong\u003e while helping maintain cleaner surfaces throughout the system. Their bold appearance and active presence also add dynamic movement to the tank, making them both a functional and visually striking member of a cleanup crew.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #dde5e8; margin: 18px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 18px; color: #1a5a61;\"\u003eAvailable Options\u003c\/h3\u003e\n\u003cdiv style=\"background: linear-gradient(180deg,#f6fbf8 0%, #edf7f2 100%); border: 1px solid #d4e6e3; border-radius: 12px; padding: 13px 15px;\"\u003e\n\u003cp style=\"margin: 0 0 6px 0; color: #1a5a61;\"\u003e\u003cstrong\u003e1 Black Longspine Sea Urchin\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"margin: 0; padding-left: 18px; color: #22323a; line-height: 1.7;\"\u003e\n\u003cli\u003ePowerful algae grazer for established systems\u003c\/li\u003e\n\u003cli\u003eTargets film algae and nuisance growth\u003c\/li\u003e\n\u003cli\u003eAdds movement and cleanup support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #dde5e8; margin: 18px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 18px; color: #184f69;\"\u003eCare Information\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: separate; border-spacing: 10px 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 50%; background-color: #eceff1; border: 1px solid #cfd6da; border-radius: 10px; padding: 11px 13px; color: #22323a; vertical-align: top;\"\u003e💡 \u003cstrong style=\"color: #435760;\"\u003eLighting\u003c\/strong\u003e\u003cbr\u003eAll Lighting Conditions\u003c\/td\u003e\n\u003ctd style=\"width: 50%; background-color: #eceff1; border: 1px solid #cfd6da; border-radius: 10px; padding: 11px 13px; color: #22323a; vertical-align: top;\"\u003e🌊 \u003cstrong style=\"color: #435760;\"\u003eWater Flow\u003c\/strong\u003e\u003cbr\u003eModerate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #eceff1; border: 1px solid #cfd6da; border-radius: 10px; padding: 11px 13px; color: #22323a; vertical-align: top;\"\u003e📍 \u003cstrong style=\"color: #435760;\"\u003ePlacement\u003c\/strong\u003e\u003cbr\u003eRockwork and substrate\u003c\/td\u003e\n\u003ctd style=\"background-color: #eceff1; border: 1px solid #cfd6da; border-radius: 10px; padding: 11px 13px; color: #22323a; vertical-align: top;\"\u003e⚙️ \u003cstrong style=\"color: #435760;\"\u003eCare Level\u003c\/strong\u003e\u003cbr\u003eEasy to Moderate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color: #eceff1; border: 1px solid #cfd6da; border-radius: 10px; padding: 11px 13px; color: #22323a; vertical-align: top;\"\u003e📈 \u003cstrong style=\"color: #435760;\"\u003eBehavior\u003c\/strong\u003e\u003cbr\u003eActive grazer, constantly roaming\u003c\/td\u003e\n\u003ctd style=\"background-color: #eceff1; border: 1px solid #cfd6da; border-radius: 10px; padding: 11px 13px; color: #22323a; vertical-align: top;\"\u003e🧪 \u003cstrong style=\"color: #435760;\"\u003eFeeding\u003c\/strong\u003e\u003cbr\u003eOmnivore (Algae, organic buildup)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #dde5e8; margin: 18px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 18px; color: #6a6b58;\"\u003eSpecial Considerations\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #faf8ee; border: 1px solid #e6e1c9; border-left: 4px solid #b7ad78; border-radius: 10px; padding: 13px 15px; color: #22323a;\"\u003eBlack Longspine Sea Urchins have \u003cstrong\u003every long, delicate spines\u003c\/strong\u003e that can be easily damaged in tight aquascapes. They may also dislodge loose frags or decorations while moving. Caution should be taken when handling, as the spines can be sharp and fragile.\u003c\/div\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #dde5e8; margin: 18px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 18px; color: #123844;\"\u003e🔍 Aquarium Insights\u003c\/h3\u003e\n\u003cp style=\"margin: 0 0 8px 0; color: #22323a; line-height: 1.7;\"\u003eBlack Longspine Sea Urchins serve as a powerful cleanup crew member within reef aquariums:\u003c\/p\u003e\n\u003cul style=\"margin-top: 0; padding-left: 18px; color: #22323a; line-height: 1.7;\"\u003e\n\u003cli\u003eActively graze on film algae and nuisance algae growth\u003c\/li\u003e\n\u003cli\u003eHelp maintain cleaner rockwork and substrate surfaces\u003c\/li\u003e\n\u003cli\u003eConstant movement increases overall tank activity\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eProvide heavy-duty algae control in established systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #dde5e8; margin: 18px 0;\"\u003e\n\u003ch3 style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 18px; color: #123844;\"\u003eLearn More\u003c\/h3\u003e\n\u003cp style=\"margin: 0; color: #22323a; line-height: 1.7;\"\u003eFor detailed species information, compatibility, and care tips, visit our \u003cstrong\u003e\u003ca style=\"color: #1d5c78;\" href=\"https:\/\/www.macroalgaefarms.com\/pages\/species-library\"\u003eSpecies Library\u003c\/a\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr style=\"border: 0; border-top: 1px solid #dde5e8; margin: 24px 0;\"\u003e\n\u003cdiv style=\"background-color: #f6f8f9; border: 1px solid #dde4e7; border-left: 4px solid #8a98a0; border-radius: 10px; padding: 13px 15px; font-size: 13px; color: #607078; line-height: 1.65;\"\u003e\n\u003cstrong style=\"color: #46545b;\"\u003eLivestock Disclaimer\u003c\/strong\u003e\n\u003cp style=\"margin: 8px 0 10px 0;\"\u003eDue to natural variation between specimens, coloration and size may vary slightly from images shown. Photographs are representative examples of general appearance and size.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 10px 0;\"\u003eIndividual specimens may vary based on age, environment, and natural development.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eApproximate size ranges are provided for reference but may differ slightly from the specimen received.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Macroalgae Farms","offers":[{"title":"Default Title","offer_id":47854636302595,"sku":"T8U","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/7151\/7699\/files\/8c6afa72-f340-495d-85ac-69966ac55cc9.png?v=1774203927","url":"https:\/\/www.macroalgaefarms.com\/products\/black-longspine-sea-urchin-algae-eater","provider":"Macroalgae Farms","version":"1.0","type":"link"}