Dark Substrate for neons

my neons have bright gravel
I put black fabric around 3 sides of my tank...their colors tripled in brilliance

I"m switching to black sand, I thinkt eh darker your "stuff" is the more brillinat their colors will be
 
I agree, neons do enjoy a darker tank. Dark surroundings have tended to enhance the colors of most the fish I have owned.
 
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