Just got a 75 (stand,filter and light for 100 bucks). 1st time I have had one this big. I got black gravel but haven't started my build until this weekend. Not sure on gravel and want it to look good that will bring out the best color in my fish. Any suggestions? With black gravel would a black background be to much? I'll have all live plants and need some idea's. I'm stuck any suggestions would be great full.