Hello all im new to the site and too keeping saltwater fish. I have done all my research so dont worry im not going to be putting 4 clown fish in with 2 tangs a puffer water and a bag of salt. I know the basics on pretty much setting up the tank to feeding. Just needed abit of advice on what else i could purchase. I have the salt water at the right salinity, two internal bio filters, an external filter, a lid with built in t5 lighting, a heater. My sand bed is like a rough sand with little bits of stone in. Is this a problem or will this be able to grow into live sand ? Plus im getting my live rock as soon as possible but i dont know how much i would need? Baring in mind im only planning on keeping fish and a crabs, prawns etc. And last of all, do i need more equipment ? Sorry for all the questions but i just dont want to be wasting all this money getting a fish and it dies in the next week Thank you