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post #17 of (permalink) Old 06-26-2013, 09:26 PM
Planted Tank Obsessed
Join Date: Nov 2012
Location: Where the devil went down to!
Posts: 314
Coal slag is safe for kuhli's and corys. as i have both and they seem fine. black diamond is environmentally safe, check out their website it will give a good explanation of what it is.. My loaches still burrow in the substrate and i don't notice any cuts or abrasion of any sort.

I am very pleased with Black diamond blasting sand. and I plan on using it as a cap for my first dirt tank.
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