So I have few week old tanks a 10 g and a 5 g and my lfs decided to stop saltwater stuff and petco doesn’t sell saltwater only salt so what do I do I have a very small budget I’m about to rehome the fish and switch back to freshwater I’m very frustrated and really dont/can’t buy a RO system thing any suggestions? all I have is a 5 gal jug of saltwater and then that’s it

