{"product_id":"bioscape-coral-sand-1mm-diameter","title":"Bioscape Coral Sand 1mm Diameter","description":"\u003cp\u003e\u003cstrong\u003eA fine coral and aragonite substrate that keeps marine and cichlid tanks buffered.\u003c\/strong\u003e Bioscape Coral Sand is a 1mm grain substrate of crushed coral and aragonite, sized for an even, natural-looking sand bed that also holds pH and hardness stable over time.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoral and aragonite blend\u003c\/strong\u003e — calcium carbonate media that slowly dissolves to release calcium and carbonate into the water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1mm fine grain\u003c\/strong\u003e — fine enough for sand-sifting fish, gobies and burrowing invertebrates to move through naturally, unlike coarse rubble or gravel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH and alkalinity buffer\u003c\/strong\u003e — helps hold water parameters stable, which is what marine and African cichlid systems are built to run at.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh surface area\u003c\/strong\u003e — supports beneficial bacteria for extra biological filtration wherever it's used.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eComposition\u003c\/th\u003e\n\u003ctd\u003eCrushed coral and aragonite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGrain size\u003c\/th\u003e\n\u003ctd\u003e1mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColour\u003c\/th\u003e\n\u003ctd\u003eNatural neutral tones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003epH\/alkalinity buffer, fine substrate bed, biological filtration media\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eWhich size do I need?\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eVariant\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e5kg bag\u003c\/td\u003e\n\u003ctd\u003eCOR01\u003c\/td\u003e\n\u003ctd\u003e$43.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10kg bag\u003c\/td\u003e\n\u003ctd\u003eCOR02\u003c\/td\u003e\n\u003ctd\u003e$74.95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eBioscape has not published a coverage depth per kilogram for this sand, so we can't give an exact bag-to-tank-footprint figure here. As a general reference point, aquarium sand is commonly run at a 2–5cm bed depth, but check your own footprint and desired depth before ordering, and round up rather than down if you're unsure.\u003c\/p\u003e\u003ch3\u003eCoral Sand vs Coral Rubble — which do I need?\u003c\/h3\u003e\u003cp\u003eSand's fine 1mm grain is what you want for the visible substrate bed — it's what sand-sifting fish and gobies can actually move through, and it settles into an even, natural-looking layer. Bioscape Coral Rubble's larger 20–50mm pieces are better suited to structural jobs — sump and refugium media, or a base layer under reef and cichlid rockwork. Reef and cichlid setups often run sand as the visible bed with rubble hidden in the sump for extra buffering.\u003c\/p\u003e\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e marine and reef aquariums, African cichlid tanks, and setups wanting a fine, natural-look substrate that also buffers water chemistry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e soft or acidic-water setups — South American cichlids, most planted tanks and blackwater biotopes — where the rising pH and hardness from dissolving carbonate works against the tank you're trying to keep.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\u003cp\u003eRinse before adding to settle dust from bagging and transit — coral sand this fine will cloud the water noticeably if added dry. Buffering capacity reduces as the sand dissolves over years; test alkalinity periodically in heavily stocked reef systems.\u003c\/p\u003e\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\u003cp\u003eNatural product — exact grain colour and tone vary bag to bag, and photos are representative. Any fault on arrival is covered under your consumer guarantee rights under Australian Consumer Law.\u003c\/p\u003e\u003ch3\u003eCommon questions\u003c\/h3\u003e\u003ch4\u003eWill this cloud my water when I add it?\u003c\/h4\u003e\u003cp\u003eYes, briefly, if added dry — rinse it first in a bucket until the runoff runs mostly clear, then add it to reduce clouding.\u003c\/p\u003e\u003ch4\u003eHow deep should I lay it?\u003c\/h4\u003e\u003cp\u003eBioscape hasn't published a coverage figure. A 2–5cm bed is a common real-world starting depth for aquarium sand, but check what your stocking (e.g. sand-sifting fish, burrowing inverts) actually needs before deciding.\u003c\/p\u003e\u003ch4\u003eIs this safe for a planted freshwater tank?\u003c\/h4\u003e\u003cp\u003eIt will buffer pH and hardness upward over time, which suits most plants poorly and works against soft-water species — it's built for marine and African cichlid systems, not general planted freshwater tanks.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"5kg","offer_id":55293070967075,"sku":"COR01","price":43.95,"currency_code":"AUD","in_stock":false},{"title":"10kg","offer_id":55335001096483,"sku":"COR02","price":74.95,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/bioscape-coral-sand-5kg.jpg?v=1783990058","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/bioscape-coral-sand-1mm-diameter","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}