Honestly, I don't find my black ever looks dirty, especially in comparison to the aragonite in my salt tank. And goldfish **** like crazy. So I cant even begin to imagine that it would look any dirtier in a salt tank. Even in the photos SlyGuy00 posts of his tank, the black sand doesn't look dirty, unless Nick cleans it before he takes pictures lol
Heres a few pictures, honestly I never gravel vacuumed that cichlid tank once and those photos are from after they had been set up like that for a few months, the larger black "pebbels" you see are bits of Fluval substrate I had in the pots with the plants, which of coarse had been dug out.
1st is GF tank, 2nd is tank prior to cichlids so sand is fresh at this point. The rest are from after dirty cichlid use. And you can see the black tinted yellow fish.
Both freshie tanks are lit by T5HO, so growing algae was never an issue lol
