Thanks! He's here!
the swords were bought massive. They've only been planted in our tank for a few months. They are planted in pots, in plant substrate, while the substrate around the terra cotta pots is a shallow layer of white sand.
Transferring him wasn't bad. i'm sure there's bag water in the tank, but not much, and the tank is 120 gallons, so it's very diluted by now.
How long is normal for a puffer to stay stressed from shipping? Again, my experience is with cichlids, and some shake it off in a couple hours. Larger cichlids, like an oscar, might pout about it for a couple of days....
Finally, the ph range i saw on the fahaka profile was pretty broad. What is their preference. We have soft water & have to work to keep the ph up. I can get some holey rock for the tank, if they perfer harder, more alkaline water. It's at ~6.8 right now.