I've seen a lot of people using this in their planted tanks, but wanted to ask a few questions about it before I go and get some to try out.
I'll quote the description of it from the Tractor Supply Co. website:
Black Diamond Granules are coal slag abrasives used as a blasting media to remove paint and rust from surfaces to produce a clean, ready for repaint finish. Black Diaond coal slag granules are very hard and angular in shape, making their cleaning speed and cutting ability very efficient and productive. Black Diamond coal slag also has very low free silica content(less than 2 percent).
Will this affect fish like cories, eels, eartheaters, and other fish that like to dig/burrow in the sand?
If I was wanting to use this as my main substrate, what can I expect? Is it thick and dense? Or is it 'fluffy' and easy to suck up in the siphon intake?
I normally prerinse all sands before I put them in the tank, but am curious how much dust these generally have that is released into the water column?
My main concern would be the eartheaters, aside from that I shouldn't have any fish in there that would sift the sand.

