I have a 12 gallon tank, and have a school of Neon Tetras, and a beautiful blue and white male betta in there. I am changing my old white gravel to balck gravel, but reading other Q & A's I am not sure to use a black background too, a solid blue one, or some other color? RIght now, My background is a regular popular underwater scene, with solid blue on the opposite side. What would be the best?
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