Couple of options. I'm not sure, but I think the Big Al's stores (thinking you are in Canada?) may sell it, and that would be a cheaper way to go than online.
Otherwise, spend the money of good live rock, and it will come with much of the life you want, which will spread to the sand. Did this with a 50, and it's in good shape, just takes a bit longer to develop.
Otherwise, spend the money of good live rock, and it will come with much of the life you want, which will spread to the sand. Did this with a 50, and it's in good shape, just takes a bit longer to develop.