PSA: Pool Filter Sand & Black Diamond Blasting Sand are cheaper than many fancy aquarium sands, and won't mess with your water parameters : r/Aquariums
Amazon.com: Black Diamond Blasting Abrasive, Medium Grade (10 lbs) : Tools & Home Improvement
PSA: Black diamond blasting sand works for a planted tank substrate and well worth it if you don't want to break the bank on a aquascape in a large tank. : r/Aquariums
Black Diamond Abrasives | Industry Leading Blasting Media
Heavy-duty 50lb MED Blast Abrasive for Efficient UK | Ubuy
Black diamond blasting sand: a cautionary tale | Freshwater Substrates - Gravel, Sand Forum
Black Diamond 30/60 40/80 Sand For Aquariums - YouTube
Firebox Rust - Anyone use Black Diamond made from coal slag in the Red Bag? | Hearth.com Forums Home