Even if you went out 10 miles to get clean sand you don't know what pest organisms you mihgt introduce to yor tank. It's best to get plain dry sand and Live Rock (
LR). The hitchikers on the
LR will help the sand become live. Also, getting a cup or two of sand from an established reef tank is all that is needed. Read the articles that Roka pointed too as well as the others in the
SW article section. Then post the questions that are bound to arise in the
SW forums.