no no... depending of what you're aiming at... if you want reef, you don't get starfish first until your tank is established... at least 6months to a year... the good sandshifters for me is Nassarius snails, you don't see them much because they'll be under the sands... so for your tank size I would definitely recommend 3-5 Nassarius, but 3 is best so that they won't be too hungry and the other snails are Astrea and/or Cerith probably like 3-4 so that they won't be too hungry cause they clean up the algae real good too and as I said earlier, get the mag cleaner to clean your glass, I know you think the snails can clean it, but it will be like splotchy, dots everywhere so you use mag cleaner the magnet to make it real clean... just get the small size one.