Im looking at setting up a GT only tank. I was wondering what the best set up would be and what they enjoy having in the tank. Do they enjoy having plants and/or driftwood? My LFS sells sand and it also sells a bigger 3-4mm sand/gravel would this be OK as it will be easier to vac? I was thinking of black substrate would this be OK? My water is 75ppm/4.2dh is this OK for a GT? Thanks!