When it comes to picking an aquarium background to go with your substrate here's what I recommend.
For those of you that perhaps have a dark background and dark substrate you'll want to add in tank decor that's light in color, like a lot of lush green plants for instance.
So if you perhaps have a light background and substrate you'll want your decor to be darker/deeper in color.
Black is great for making decor/plants appear fuller than they are by creating a shadowing affect under decor/plants. That being said if you have a light colored substrate and want to add depth you could always use dark colored stones around the areas you want to add more depth to. Or if you have dark substate use light colored stones/pebbles/etc in the areas you want to highlight.
If you choose a dark background like black, you'll generally want your substrate to be light in color in order to create a sense of depth in your aquarium.
So that also means, if you have a light colored background or perhaps no background with natural light coming through you'll probably want to go with a darker substrate such as black.For those of you that perhaps have a dark background and dark substrate you'll want to add in tank decor that's light in color, like a lot of lush green plants for instance.
So if you perhaps have a light background and substrate you'll want your decor to be darker/deeper in color.
Black is great for making decor/plants appear fuller than they are by creating a shadowing affect under decor/plants. That being said if you have a light colored substrate and want to add depth you could always use dark colored stones around the areas you want to add more depth to. Or if you have dark substate use light colored stones/pebbles/etc in the areas you want to highlight.