Black gravel for saltwater aquarium

[Dmat21]

so I think I’m gonna go with a 1 inch or so layer of black gravel in my saltwater aquarium.
any insight on going this route?

 

[AcroNem]

depends on the black you're using. Some are a definite no no for a marine system.

 

[Dmat21]

depends on the black you're using. Some are a definite no no for a marine system.

Top fin from Petsmart?

 

[AcroNem]

I would not use that. You'll get mixed reviews on the Hawaiian black by Caribsea(which I've used for over a decade without issues) I've also used gray coast by seachem, which is calcite and I liked that.