{"product_id":"black-seiryu-stone","title":"Black Seiryu Stone","description":"\u003cbody\u003e\n\n\n  \n\u003cmeta name=\"viewport\" content=\"width=device-width,initial-scale=1.0\"\u003e\n  \u003ctitle\u003eBlack Seiryu Stone - Superior Shrimp and Aquatics\u003c\/title\u003e\n  \u003clink href=\"https:\/\/fonts.googleapis.com\/css2?family=Playfair+Display:wght@400;600;700\u0026amp;family=DM+Sans:wght@300;400;500\u0026amp;display=swap\" rel=\"stylesheet\"\u003e\n  \u003cstyle\u003e\n\n    .ssa-pd *, .ssa-pd *::before, .ssa-pd *::after { box-sizing: border-box; }\n    @keyframes fadeUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }\n    .ssa-pd { font-family: 'DM Sans', sans-serif !important; color: #1e1a1a !important; background: #fff !important; line-height: 1.75 !important; }\n    .ssa-pd .hero { background: linear-gradient(150deg, #111111 0%, #2a0000 60%, #F40909 100%) !important; padding: 3.5rem 3rem 2.8rem !important; position: relative !important; 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}\n  \n    .ssa-pd .hard-cta { background:linear-gradient(135deg,#111111 0%,#1a1a1a 100%) !important;border-radius:12px !important;padding:1.8rem 2rem !important;margin:2.5rem 0 !important;display:flex !important;align-items:center !important;gap:1.4rem !important;text-decoration:none !important;transition:background 0.2s,transform 0.2s !important; }\n    .ssa-pd .hard-cta:hover { background:linear-gradient(135deg,#1a0000 0%,#2a0000 100%) !important;transform:translateY(-1px) !important; }\n    .ssa-pd .hard-cta .cta-icon { font-size:2.8rem !important;flex-shrink:0 !important;line-height:1 !important; }\n    .ssa-pd .hard-cta .cta-text strong { display:block !important;font-family:'Playfair Display',serif !important;font-size:1.2rem !important;color:#fff !important;margin-bottom:0.3rem !important;font-weight:600 !important; }\n    .ssa-pd .hard-cta .cta-text p { font-size:1.05rem !important;color:rgba(255,255,255,0.55) !important;margin:0 !important;font-weight:300 !important;line-height:1.6 !important; }\n  \u003c\/style\u003e\n\n\n\u003cdiv class=\"ssa-pd\"\u003e\n  \u003cdiv class=\"hero\"\u003e\n    \u003cstyle\u003e.ssa-pd .hero::before{content:\"\u0026#129704;\";}\u003c\/style\u003e\n    \u003cspan class=\"hero-tag\"\u003eHardscape\u003c\/span\u003e\n    \u003ch1\u003eBlack Seiryu Stone\u003c\/h1\u003e\n    \u003cp class=\"hero-sub\"\u003eA dramatic dark stone with sharp angular edges and striking white calcite veining -- one of the most iconic aquascaping stones in the hobby, and the defining material of the classic Iwagumi layout.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"feature-pills\"\u003e\n    \u003cspan class=\"fpill\"\u003e\u003cspan class=\"dot\"\u003e\u003c\/span\u003e Deep Black with White Calcite Veining\u003c\/span\u003e\n    \u003cspan class=\"fpill\"\u003e\u003cspan class=\"dot\"\u003e\u003c\/span\u003e Sharp Angular Edges\u003c\/span\u003e\n    \u003cspan class=\"fpill\"\u003e\u003cspan class=\"dot\"\u003e\u003c\/span\u003e Raises KH and pH\u003c\/span\u003e\n    \u003cspan class=\"fpill\"\u003e\u003cspan class=\"dot\"\u003e\u003c\/span\u003e Neocaridina Compatible\u003c\/span\u003e\n    \u003cspan class=\"fpill\"\u003e\u003cspan class=\"dot\"\u003e\u003c\/span\u003e Ideal for Iwagumi Layouts\u003c\/span\u003e\n    \u003cspan class=\"fpill\"\u003e\u003cspan class=\"dot\"\u003e\u003c\/span\u003e Epiphyte Attachment Surface\u003c\/span\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"body-wrap\"\u003e\u003cdiv class=\"prose\"\u003e\n\n    \u003cp\u003e\u003cstrong\u003eBlack Seiryu Stone\u003c\/strong\u003e is a dark grey-to-black limestone with sharp, angular edges and a distinctive network of white calcite veins running across its surface. The veining pattern is unique to every piece -- no two stones share the same distribution of white lines against the dark base -- and the contrast between the near-black stone surface and the bright calcite veins gives each piece a graphic, almost painted quality that reads as striking from across the room. Seiryu Stone is the defining hardscape material of the Iwagumi aquascaping style, and its angular, cliff-like profile makes it equally effective as a solo focal stone or as part of a multi-piece mountain range composition. One important parameter note: Seiryu Stone is a limestone and will gradually raise KH and pH over time as it dissolves slowly into the water. This makes it well-suited to \u003ca href=\"\/es\/collections\/neocaridina-shrimp-parent\" title=\"Neocaridina shrimp | colorful freshwater clean-up crew – superior shrimp \u0026amp; aquatics\" aria-label=\"Neocaridina shrimp | colorful freshwater clean-up crew – superior shrimp \u0026amp; aquatics\"\u003eNeocaridina\u003c\/a\u003e setups which benefit from stable KH, but it is not compatible with \u003ca href=\"\/es\/collections\/caridina-shrimp-parent\" title=\"Caridina shrimp | vibrant freshwater shrimp for aquariums – superior shrimp \u0026amp; aquatics\" aria-label=\"Caridina shrimp | vibrant freshwater shrimp for aquariums – superior shrimp \u0026amp; aquatics\"\u003eCaridina\u003c\/a\u003e tanks that require soft, acidic water. Monitor parameters when first introducing the stone and adjust water change routine as needed.\u003c\/p\u003e\n\n    \u003cspan class=\"section-label\"\u003eAppearance \u0026amp; Character\u003c\/span\u003e\n    \u003ch2\u003eBlack Base, White Veining\u003c\/h2\u003e\n    \u003cdiv class=\"bullet-list\"\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eDeep black-grey base with white calcite veining -- the most graphic stone contrast in aquascaping\u003c\/strong\u003e -- the surface of Black Seiryu Stone is a near-black dark grey when dry, deepening to a rich, true black when wet. Across this dark surface runs a network of white to pale grey calcite veins -- irregular, branching lines that vary in width, density, and pattern from piece to piece. The contrast between the dark base and bright veining is the defining visual feature of the stone and the primary reason it has remained one of the most popular aquascaping materials in the hobby for decades. The veining pattern is entirely natural and unrepeatable -- each piece is unique.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eSharp, angular edges and flat faces -- a cliff-like profile distinct from rounded river stones\u003c\/strong\u003e -- Seiryu Stone has a distinctly angular character. The edges are sharp and the faces relatively flat, giving pieces a stratified, cliff-like or mountainous profile when oriented vertically. This makes it one of the most effective stones for creating the impression of scale and geological depth in small tanks -- a well-chosen piece oriented with its flat face forward reads as a mountain face or rock formation at a scale far beyond its actual size.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eEach piece is unique in veining pattern, profile, and proportions\u003c\/strong\u003e -- no two pieces of Seiryu Stone are identical. The distribution and density of white calcite veining, the sharpness and angle of the edges, the overall profile, and the ratio of flat faces to angular edges all vary between pieces. Selecting pieces whose veining patterns and profiles complement each other is one of the primary creative decisions in Seiryu-based aquascaping.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eColour deepens dramatically when wet -- dry appearance is not the final appearance\u003c\/strong\u003e -- Seiryu Stone appears a medium dark grey when dry. When submerged the colour deepens considerably, approaching true black in the darkest areas and making the white calcite veining appear brighter and more contrasty by comparison. Always evaluate pieces wet or under running water to assess the final submerged colour before making layout decisions.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cspan class=\"section-label\"\u003eWater Chemistry\u003c\/span\u003e\n    \u003ch2\u003eParameter Impact -- Read Before Purchasing\u003c\/h2\u003e\n    \u003cdiv class=\"bullet-list\"\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eRaises KH and pH over time -- compatible with Neocaridina, not with Caridina\u003c\/strong\u003e -- Seiryu Stone is a limestone and dissolves slowly in aquarium water, releasing carbonates that raise KH and stabilise or gradually increase pH. In a Neocaridina tank this is generally beneficial -- stable KH prevents pH swings and the raised hardness sits comfortably within the Neocaridina parameter range. In a Caridina tank requiring pH 6.0--6.8 and KH 0--2, Seiryu Stone will work against the active substrate buffering system and is not recommended. Do not use Black Seiryu Stone in a Caridina setup.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eRate of parameter impact varies by piece size and tank volume\u003c\/strong\u003e -- larger pieces in smaller tanks will raise KH more noticeably than small accent pieces in larger volumes. Monitor KH weekly for the first month after introduction and adjust your water change routine if KH climbs outside your target range. Most Neocaridina keepers find the impact stabilises at a manageable level within four to six weeks as the most soluble surface calcium is depleted.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eRinse thoroughly before use -- surface dust and calcite particles are normal\u003c\/strong\u003e -- rinse each piece under running water and scrub with a stiff brush before placing in the tank. A brief soak of 30--60 minutes after rinsing clears remaining surface particulate. Do not boil Seiryu Stone -- thermal shock can cause cracking along the calcite veins.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cspan class=\"section-label\"\u003eAquascaping\u003c\/span\u003e\n    \u003ch2\u003eLayout \u0026amp; Composition\u003c\/h2\u003e\n    \u003cdiv class=\"bullet-list\"\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eThe defining stone of Iwagumi -- mountain range compositions in odd-numbered groupings\u003c\/strong\u003e -- the classic Iwagumi layout uses Seiryu Stone in groups of three, five, or seven pieces arranged to suggest a mountain range, with one dominant anchor stone (the oyaishi) flanked by progressively smaller secondary and tertiary stones. Burying the base of each stone partially in substrate so only the upper portion is visible dramatically increases the impression of scale. All stones in a composition should be oriented with their strata lines running in the same direction to read as a unified geological formation.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eExcellent attachment surface for mosses and epiphytic plants\u003c\/strong\u003e -- the sharp edges and rough surface texture of Seiryu Stone hold cotton thread and super glue gel securely, making it a reliable attachment surface for \u003ca href=\"\/es\/collections\/aquatic-plants-parent\" title=\"Aquatic plants for freshwater tanks | vibrant \u0026amp; healthy ecosystems – superior shrimp \u0026amp; aquatics\" aria-label=\"Aquatic plants for freshwater tanks | vibrant \u0026amp; healthy ecosystems – superior shrimp \u0026amp; aquatics\"\u003eJava Moss, Weeping Moss, Bucephalandra, and Anubias\u003c\/a\u003e. Plants attached to the angular edges and flat faces of Seiryu Stone develop a naturalistic, overgrown cliff appearance over time that is one of the most effective planted hardscape combinations available.\u003c\/span\u003e\n      \u003cspan class=\"bl-item\"\u003e\u003cstrong\u003eCan be split along natural fault lines with a chisel and hammer\u003c\/strong\u003e -- Seiryu Stone fractures relatively cleanly along its natural calcite veins and fault lines. Splitting a larger piece produces two smaller pieces with fresh, angular faces that match the character of the original stone. This allows a single larger piece to be adapted into multiple composition elements or sized to fit a specific tank dimension.\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"tip-box\"\u003e\n      \u003cspan class=\"tip-label\"\u003eSpecific Piece Requests\u003c\/span\u003e\n      \u003cp\u003eEvery piece of Black Seiryu Stone is unique in size, profile, edge sharpness, and veining pattern. If you have a specific preference -- a taller, more vertical cliff-face profile; a broader horizontal piece; a particular size range; denser or more delicate veining; or anything else -- leave a note at checkout and we will do our best to select a piece that matches your needs from current stock. We cannot guarantee an exact match, but we read every note and pull accordingly.\u003c\/p\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- Hardscape CTA --\u003e\n    \u003ca href=\"\/es\/collections\/hardscape-parent\" class=\"hard-cta\" title=\"Aquarium hardscape | rocks, wood \u0026amp; aquascaping supplies – superior shrimp \u0026amp; aquatics\" aria-label=\"Aquarium hardscape | rocks, wood \u0026amp; aquascaping supplies – superior shrimp \u0026amp; aquatics\"\u003e\n      \u003cspan class=\"cta-icon\"\u003e🪨\u003c\/span\u003e\n      \u003cdiv class=\"cta-text\"\u003e\n        \u003cstrong\u003eBrowse more hardscape\u003c\/strong\u003e\n        \u003cp\u003ePair Black Seiryu Stone with Spider Wood, mosses, or Bucephalandra for a complete Iwagumi or nature aquarium layout. Browse our full \u003cspan style=\"color:#F40909;font-weight:500;\"\u003eHardscape collection\u003c\/span\u003e.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cspan style=\"color:rgba(255,255,255,0.4);font-size:1.4rem;flex-shrink:0;\"\u003e→\u003c\/span\u003e\n    \u003c\/a\u003e\n\n    \u003c!-- Policy Bar --\u003e\n    \u003cdiv class=\"policy-bar\"\u003e\n      \u003cspan\u003eBefore placing your order, please review our\u003c\/span\u003e\n      \u003ca href=\"\/es\/pages\/doa-policy\" title=\"Live arrival guarantee | superior shrimp \u0026amp; aquatics\" aria-label=\"Live arrival guarantee | superior shrimp \u0026amp; aquatics\"\u003eDOA Policy\u003c\/a\u003e\n      \u003ca href=\"\/es\/pages\/shipping-info-practices\" title=\"Shipping policies, info \u0026amp; practices – superior shrimp \u0026amp; aquatics\" aria-label=\"Shipping policies, info \u0026amp; practices – superior shrimp \u0026amp; aquatics\"\u003eShipping Info\u003c\/a\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/body\u003e","brand":"Superior Shrimp \u0026 Aquatics","offers":[{"title":"3 - 5 Inches \/ 1 LB","offer_id":44966446170320,"sku":null,"price":6.0,"currency_code":"USD","in_stock":true},{"title":"3 - 5 Inches \/ 3 LB","offer_id":44966446203088,"sku":null,"price":18.0,"currency_code":"USD","in_stock":true},{"title":"3 - 5 Inches \/ 5 LB","offer_id":44966446235856,"sku":null,"price":24.0,"currency_code":"USD","in_stock":true},{"title":"3 - 5 Inches \/ 10 LB","offer_id":44966446268624,"sku":null,"price":48.0,"currency_code":"USD","in_stock":true},{"title":"3 - 5 Inches \/ 20 LB","offer_id":44966446301392,"sku":null,"price":96.0,"currency_code":"USD","in_stock":true},{"title":"6 to 12 Inches \/ 5 LB","offer_id":44966446399696,"sku":null,"price":30.0,"currency_code":"USD","in_stock":true},{"title":"6 to 12 Inches \/ 10 LB","offer_id":44966446432464,"sku":null,"price":60.0,"currency_code":"USD","in_stock":true},{"title":"6 to 12 Inches \/ 20 LB","offer_id":44966446465232,"sku":null,"price":120.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0639\/2895\/9184\/files\/black-seiryu-stone-3-5-inches-1-lb-hardscape-pile-dark-gray-rough-419.webp?v=1780949496","url":"https:\/\/www.superiorshrimpaquatics.com\/es\/products\/black-seiryu-stone","provider":"Superior Shrimp \u0026 Aquatics","version":"1.0","type":"link"}