I'm wanting to get the right substrate for my FH 75 gallon tank, so I was wondering if anyone has any natural colored sand I could try for cheap or free if you just want to get rid of it. The red s-grade I have in there doesn't look right w/ the lighting (way too flourescent looking) I'm using and I'm not going to change that since I found what I like. Plus i don't want black w/ my black painted back like usual for this fish. I'd love to try some buff or brown ColorQuartz if I can find it, but I won't even need a full bag and I don't want to waste $20 to find it's not going to work. I'm willing to try almost anything, though except bright colors.