I also use black diamond sand. Love it! You just have to clean it really well. Mine came oily but I left it soaking over night in 5 gallon bucks and the oil all came to the top of the water so was easy to get off. Not all of it came clean, but in less then an hour in the tank it was all gone.
46 Bow Front Planted
Eheim 2217 & 2236, 2-39wt T5 bulbs (10,000), 72-75*
Pristella tetras, cardinal tetra, amano shirmp, bamboo shrimp, nerite snails, assassin snails and red cherry shrimp.