{"product_id":"bioscape-ebony-black-coarse-2-4mm","title":"Bioscape Ebony Black Coarse 2-4mm","description":"\u003cp\u003e\u003cstrong\u003eA dyed-black coarse gravel that makes bright fish and plants pop.\u003c\/strong\u003e Bioscape Ebony Black Coarse 2-4mm is a natural aquarium and terrarium gravel supplied in 3 kg and 7 kg bags, at a chunky 2–4 mm grain size that resists compacting flat.\u003c\/p\u003e\n\u003cp\u003eIt suits a full tank base, an accent layer in an aquascape, or a drainage layer under a terrarium substrate, and lets water and root-tab fertiliser move through the bed rather than sealing it off.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-contrast black\u003c\/strong\u003e — a dark bed that makes bright fish, plants and hardscape stand out, and shows less visible detritus between water changes than a pale gravel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoarse 2-4mm grade\u003c\/strong\u003e — chunky enough to resist compacting flat, and open enough for water and root-tab fertilisers to move through.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSame line as Breakwater Brown\u003c\/strong\u003e — part of Bioscape's Premium Scaping Substrate range, which uses an inert, pH-neutral base gravel in the Breakwater Brown colourway; we treat Ebony Black as the same base material, dyed rather than reactive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRinse before use\u003c\/strong\u003e — Bioscape washes it before packing, but transit and handling can stir dust back up, so we'd still rinse it before adding it to the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo pack sizes\u003c\/strong\u003e — 3 kg suits a nano to small tank or an accent layer, 7 kg suits a full base in a larger tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhoto is representative\u003c\/strong\u003e — colour and exact grain mix vary a little bag to bag on a natural, dyed material.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePack size\u003c\/th\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eBarcode\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 kg\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003ctd\u003e9327975044534\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7 kg\u003c\/td\u003e\n\u003ctd\u003eBIS95\u003c\/td\u003e\n\u003ctd\u003e9327975044565\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eGrade: coarse, 2–4 mm grain size. Colour: black (dyed). Bioscape hasn't published a depth-per-bag coverage figure for this grade — as with the Breakwater Brown grade in the same range, dry-fill a footprint you can measure before committing to a full layout, since the depth you land on depends on how deep and how tightly you pack it.\u003c\/p\u003e\n\u003ch3\u003eWhich grade do I need?\u003c\/h3\u003e\n\u003cp\u003eBioscape sells the Ebony Black range in two grades:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eGrain size\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bioscape-ebony-black-fine-1-2mm\"\u003eEbony Black Fine 1-2mm\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e1-2mm\u003c\/td\u003e\n\u003ctd\u003ePlanted tanks and tight root beds, a smoother look\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEbony Black Coarse 2-4mm (this product)\u003c\/td\u003e\n\u003ctd\u003e2-4mm\u003c\/td\u003e\n\u003ctd\u003eGeneral base substrate, better water flow through the bed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable for:\u003c\/strong\u003e freshwater and marine aquariums as a base or accent, and as a drainage layer under bioactive terrarium substrate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot suitable for:\u003c\/strong\u003e setups that need an active, buffering substrate — on the basis that it shares its base gravel with the inert Breakwater Brown grade, this is a non-reactive substrate, so it won't raise KH or hardness the way a cichlid-specific substrate would, and it won't lower pH the way an aquasoil does.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eRinse before use, even though it's washed at the factory — a few minutes under a hose or in a bucket clears any dust picked up in transit and stops the tank clouding on fill. Once it's in the tank, an occasional gravel vacuum during water changes is all coarse gravel like this needs; it doesn't need replacing on any schedule.\u003c\/p\u003e\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eAny fault on arrival — a torn bag or contamination — is covered under your consumer guarantee rights under Australian Consumer Law. As a natural, dyed material, colour and exact grain mix vary a little bag to bag; the product photo is representative rather than exact.\u003c\/p\u003e\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eWill this gravel change my water's pH or hardness?\u003c\/h4\u003e\n\u003cp\u003eIt's sold as part of the same Premium Scaping Substrate range as Bioscape's inert Breakwater Brown gravel, dyed black rather than left natural, so we'd expect it to behave the same way and not push pH, KH or general hardness. Watch your test kit after adding a large amount, and let us know if you see otherwise.\u003c\/p\u003e\n\u003ch4\u003eDo I need to rinse it before adding it to my tank?\u003c\/h4\u003e\n\u003cp\u003eYes. It's washed at the factory, but a quick rinse clears any dust from transit and handling and saves you a cloudy tank on day one.\u003c\/p\u003e\n\u003ch4\u003eHow much do I need for my tank?\u003c\/h4\u003e\n\u003cp\u003eBioscape hasn't published an exact coverage figure for this grade, and coverage depends on how deep you're going, so test-fill a small measured area first if you want to work out quantity precisely rather than guessing on a full tank.\u003c\/p\u003e\n\u003ch4\u003eCan I mix this with Breakwater Brown for a two-tone look?\u003c\/h4\u003e\n\u003cp\u003eYes — both are the same grade family and differ only in colour, so they layer or blend cleanly for a two-tone base or an accent stripe.\u003c\/p\u003e\n\u003ch4\u003eWhat's the difference between this and the Fine grade?\u003c\/h4\u003e\n\u003cp\u003eGrain size — this is 2–4 mm, the Fine grade is 1–2 mm. The coarser grade compacts less and lets more water move through the bed, while the Fine grade gives a smoother look and suits tighter root systems.\u003c\/p\u003e","brand":"Bioscape","offers":[{"title":"3 kg","offer_id":55249197924643,"sku":null,"price":16.95,"currency_code":"AUD","in_stock":true},{"title":"7 kg","offer_id":55249197957411,"sku":"BIS95","price":34.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/BIS90_1.jpg?v=1772087741","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/bioscape-ebony-black-coarse-2-4mm","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}