How do i use brackish?

Question

i 'm setting up a new tank for a dragon fish do i put in the brackish be for i add the dragon fish

Answer 1

You don't really put brackish-- brackish is a range of salinity, not an object.  It would be best to find out whether the Dragon you're getting is in freshwater or backish water already, and then, start with that.  If it's in freshwater, keep the tank freshwater until you get the fish, then slowly (over the period of a couple weeks) acclimate it to brackish conditions.  If it's in brackish water already, start the tank brackish.