I just found out that my employer reps 3M so I have access to all the sand and can pretty much have it for free. Woohoo!
I went trail riding this weekend and came back with some big chunks of drift wood and about 100 pounds worth of rocks. The wood is too big to boil, so I'm just leaving it in a dark trash can. I figure with Arizona's 100 degree days and a dark can, the water should get fairly warm. I'll leave it in there for awhile, and change the water daily.
When the wood is ready, out comes the gravel and in goes black sand. The tank is going to look outstanding!