So right as i am going to leave my dorm I inherited 3 new sick betta, some one I was told dropped them off from a pet store cause they knew that I had saved the other two

... so now I have three more they made the ride back to my house alive... but all of them have issues....
Right now they are floating in a heated aquarium in clean water. The water is de-chlorinated with epsom salt (1tsp per gallon). They all show no external issues.
Betta 1:
Delta tail doubt he will last the night he can barely swim at all and just floats at the bottom.. i lowered the water level to try to help him. He also looks like he stops breathing from time to time.
Betta 2:
Redish crowntail floats on his side all the time but occasionally flips upright does not want to swim at all... looks a little bloated. He looks kinda save-able.
Betta 3:
Purple crowntail cannot manage to sink at all. He will swim occasionally but all he does is float. He is upright 50% of the time but cannot get down. Might be something wrong with his swim bladder but just a guess he also looks a little bloated. He probably will survive.