I have a 10 gallon which i was hoping to stock with a single fig8 but there is no stores in central illinois that carry them, all they have is gsp, so now i am thinking about switching to fresh and getting like 3 or 4 dwarf puffers. If anyone knows where to get a fig8 in central Illinois i would love to know becuase i have tried everywhere and is there any tips on changing over, my sg is only 1.003 so i doubt the bacteria will be harmed