Cheapest Black Aquarium Sand (no blasting sand) | MonsterFishKeepers.com
Black Diamond Abrasives | Industry Leading Blasting Media
Black Diamond Abrasive Blasting Media - TCR Coatings & Abrasives LLC
Abrasive Products | Slag Products | Black Diamond Abrasives
25 LBS - Black Diamond Blasting Abrasive, 12/40 Mesh - Medium Grade | eBay
Coal Slag Blast Media - Black Diamond Abrasives | AGSCO Corp
Is black diamond blasting sand 30-60 grit any good as substrate? It says “fine” and everyone recommends “medium” but this is the only one I've found around here : r/Aquariums