Hey guy I just bought a new 75 gallon for my blue silk.i have decided to put a blue background but cant decide on substrate. gravel or sand right now he's on white and blue mix sand so I can't decide if I should do the same color mix with gravel or just buy more of the sand mix can I get some input on what will look better an or be better for the Fh in yours guys opinion havent used gravel in years.

