{"product_id":"black-seiryu-rock","title":"Black Seiryu Rock","description":"\u003cp\u003e\u003cstrong\u003eOne hand-picked piece of black seiryu stone, sold individually.\u003c\/strong\u003e Bioscape Black Seiryu Rock is a naturally occurring aquascaping stone in deep charcoal tones with fine white mineral veining, sold as a single piece rather than by the kilo or the box — useful for topping up an existing layout or picking one specific shape.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine seiryu-style stone\u003c\/strong\u003e — the same charcoal-and-white mineral rock used in Iwagumi and Japanese-style aquascapes, sold here as an individual piece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold by the piece, not weight\u003c\/strong\u003e — pick this listing when you want to add or replace a single stone rather than commit to a full kilo or box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEach piece is unique\u003c\/strong\u003e — natural stone, so shape, weight and exact colouring vary piece to piece; the photo is representative, not the exact piece you'll receive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuits caves, ledges and ridgelines\u003c\/strong\u003e — a workable shape for building structure into an existing scape.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSold as\u003c\/th\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003cth\u003eColour\u003c\/th\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eSingle piece\u003c\/td\u003e\n\u003ctd\u003eNatural seiryu-style stone (calcareous)\u003c\/td\u003e\n\u003ctd\u003eCharcoal \/ black with white veining\u003c\/td\u003e\n\u003ctd\u003eFreshwater and marine safe\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBioscape doesn't publish a weight or dimension figure for the individual piece — it's a natural product picked and sold by the piece, and size varies. We're not printing a figure we can't confirm.\u003c\/p\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for freshwater and marine aquascapes, and for terrariums, where a hard, mineral-rich stone is wanted for structure or an Iwagumi-style layout. Not a good match for soft, acidic setups — seiryu-type stone is calcareous and will gradually raise KH, GH and pH as it weathers, which makes it a poor choice for species that need soft water, such as many tetras, wild-caught shrimp and Apistogramma, or for plant-heavy layouts relying on low mineral content.\u003c\/p\u003e\n\u003ch3\u003ePreparation\u003c\/h3\u003e\n\u003cp\u003eRinse the piece thoroughly before adding it to a tank to clear dust from handling. Because it's calcareous, it's worth running a bucket test first — leave it in a container of your tap or RO water for a few days and check KH, GH and pH before and after, so you know what to expect in the display tank. Washing it well reduces, but doesn't eliminate, its effect on hardness over time.\u003c\/p\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eCovered against being not as described under Australian Consumer Law. As a natural product, the piece you receive will vary from the listing photo in exact shape and colour — that's expected, not a fault.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill this raise my water hardness?\u003c\/h4\u003e\n\u003cp\u003eYes, gradually. Seiryu-style stone is calcareous and slowly releases calcium carbonate, raising KH, GH and pH over time. Wash it well and bucket-test it first if you're running a soft-water tank.\u003c\/p\u003e\n\u003ch4\u003eIs it safe for shrimp?\u003c\/h4\u003e\n\u003cp\u003eIt's not ideal for wild-caught or soft-water shrimp species, since the hardness rise it causes suits harder-water setups better than soft, acidic ones. Hardier, harder-water-tolerant shrimp are generally fine with it.\u003c\/p\u003e\n\u003ch4\u003eWill I get the exact piece shown in the photo?\u003c\/h4\u003e\n\u003cp\u003eNo — this is a single natural piece and the photo is representative of the stone type, not a guarantee of the specific piece you'll receive.\u003c\/p\u003e\n\u003ch4\u003eCan I use it in a terrarium as well as an aquarium?\u003c\/h4\u003e\n\u003cp\u003eYes — it's suited to both freshwater and marine aquascapes and to terrarium hardscaping.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55242297016611,"sku":"BA8332","price":9.99,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/black-seiryu-rock-46120680587555.webp?v=1790239781","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/black-seiryu-rock","provider":"Nicks AOT","version":"1.0","type":"link"}