I posted a few days ago about my betta having white stuff on his mouth here. http://www.bettafish.com/showthread.php?t=93137
There's a recent video of him on the second page.
I put him in a floating container last night that had 1 tsp per gallon of aquarium salt water last night. Today I increased it to 1.5 tsp per gallon, and then finally 2 tsp per gallon. Several hours later, he is bloated! Much like the fish in this thread. http://www.bettafish.com/showthread.php?t=93338
He hasn't been eating, but he acts totally fine. *The video was from the day before I noticed the bloating.