That depends on where you are getting the sand from. The stuff n the Bag is cool. But you dont want the stuff str8 out the ocean. some people will go to the beach and get sand off the ocean floor..that is a no no. There is stuff in there that will wipe your tank out. The stuff they sell on ths site is good. Both types. What s your pockets looking like. You get what you pay for. Bio is great..........but if I had the money to get the live sand I would.............It will help promote a healthy tank!