GSP tank

[igray]

So I have a green spotted puffer in a 10gal freshwater tank with a few mollies. We've only had them set up for about a month but we want to move them into a brackish 20gal tank. Is there any advice on how to do this? Would it be better to go ahead and transition the 10gal to blackish water and then move them into the 20gal? Or move into the 20gal and then transition to brackish? And also any methods on how to ease into brackish water would be super helpful!

[SaraB]

I would move them into the 20g then turn it brackish.