Does a darker color (black) intensify the color of all the shrimpies?? I have read that a dark substrate will enhance the color of the RCS...is this true? Is this true with all shrimpies?
I dont think its optical. You mean they just look redder because of the darker substrate? I would disagree. I have a RCS tank with black gravel and my girlfriend has RCS with cream/white gravel and mine are redder. LOL is redder a word? If not it should be.It's purely optical, but yes black works with RCS, or any shrimp that is not a dark blue, brown, purple, black, etc.. It is all based on color theory.
It does more then just the color theory. The proper substrate also maintains a slightly acidic pH and helps keep the water soft, which is important for your shrimp tank, and gives your shrimp better conditions to be at its best colors!