{"product_id":"seiryu-rock-20kg-box","title":"Seiryu Rock 20kg Box","description":"\u003cp\u003eSeiryu rock, sold by the 20kg box. Bioscape describe it as light grey through to darker grey, with natural grooves, shapes and contours — the fissured, angular character that made this the default stone for nature-style and iwagumi scapes.\u003c\/p\u003e\u003cp\u003eBuying by the box is the right way to buy hardscape. A scape needs one large stone, two or three mid-sized ones and a handful of small offcuts to bed the composition together; buying single pieces at retail almost never gives you that spread, and it costs far more per kilo. A 20kg box is roughly enough to build the hardscape in a 90–120cm tank, or to do a 60cm tank with stone left over.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBefore you order\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSizes and shapes are mixed and vary between boxes — you are buying weight, not a specified set of pieces.\u003c\/p\u003e\u003cp\u003eBioscape's advice is to wash the rock thoroughly, which they say keeps any effect on pH minimal. If you keep soft-water fish or shrimp, it is worth checking your KH about a week after adding a large amount of any natural stone, and being ready to adjust.\u003c\/p\u003e\u003cp\u003eScrub under running water before it goes in — new hardscape carries dust that will cloud a tank for days.\u003c\/p\u003e\u003cp\u003eThe rest of the hardscape range is in the \u003ca href=\"\/collections\/bioscape\"\u003eBioscape collection\u003c\/a\u003e, alongside our \u003ca href=\"\/collections\/fish-supplies\"\u003efish \u0026amp; aquarium supplies\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/bioscape.com.au\/products\/substrates-hardscape\/\" rel=\"nofollow noopener\" target=\"_blank\"\u003eBioscape substrates \u0026amp; hardscape on the brand site\u003c\/a\u003e\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"Default Title","offer_id":55909772493122,"sku":"BIOSCAPE538","price":130.19,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0563\/6676\/0120\/files\/57b2f573a6a144568cefaa8f6c80379f.jpg?v=1793278611","url":"https:\/\/www.peekapaw.com.au\/products\/seiryu-rock-20kg-box","provider":"PeekAPaw Pet Supplies","version":"1.0","type":"link"}