I just picked up my 210 gallon tank. I will be using a fx5 for filtration. I have decided to get a stingray. The spelling eludes me at the moment but I have decided on a hystrix for its supposed grown size of 18". The tank measures 72x25x29 I want to do 2/3 the tank bare sand bottom and 1/3 will have some rock and driftwood for other fish to hang out. I was going to use playsand but have read its not so good. Some use pool filter sand other spend a bunch from the lfs. What is the easiest to work with and places to get it in nj?