Aqari-sal: a mild protozoan and ice preventative for sensitive species. Effectively treats : ick, parasites, velvet, sluggishness, gasping for air, flicking against rocks.
Betta safe: water conditioner.
BettFix: 2 drops per gallon.
Aq salt: 1tbsp per gallon.
I never heard of Aquri-sal before.
Keep in mind, I am not an expert
but I would stop the AQ salt because if he does have SBD, AQ salt will not help. Fast him for a day or so and keep a look out for poops. If he is still bloated, put him in epsom salt. 1 Teaspoon per gallon. Plain, unscented epsom salt..not the ones with funky colors or scents
I use a gallon milk jug, fill it with conditioned water and then add the epsom. Shake it up and wait for it to disolve and then add it to his tank. Slowly acclimate him to the new water.
You don't really need to be using bettafix or the other medicine, unless there is something wrong with him.
Im not sure what would be causing the gasping for air...