Did you use tap water for the water changes?
K, you need a quarantine tank and get a sponge filter or something. He needs a decent environment, and i think you need something bigger than a 5 gallon bucket. Raise the temperature up more for the ich. Sorry can't help much more, i don't know much about diseases.
Good, nice work. Whats your temperature at?
Looks good, lets see the fish!
Gotcha, i wish i had those fish lol