Copper Sulfate to treat Ich

I have recently had an outbreak of ich in my tank. At the recommendation of my LFS, I got Copper Power, a copper sulfate solution, to medicate the tank. According to the bottle, you don't need to remove carbon, but I have seen some conflicting reports. Also, does anyone know how long it takes for copper sulfate to work? I really don't want to lose any fish, and I am wondering if I should use another method. I was thinking of doing salt, but I didn't want to mix remedies without someone else's experience. I have risen the temperature to about 82, but I am not sure whether it is ok to raise it more.

My tank (55 gallon):
2x Blood Parrot (3 inch)
1x Electric blue jack dempsey (4 inch)
1x Pink Tailed Chalceus (4 inch)
1x Royal Pleco (4 inch)

Anyway, I appreciate whatever advice people have. I am new to ich so I am not sure what to do.

I already added the copper, would adding salt and changing the temp still be ok?

Well, the ich seems to beaten but I will continue treatment for a couple of weeks. However, the blood parrot, who got ich worse than any other, he seems to be clean now but he looks like he has white large light areas on him. They don't look fuzzy, they look almost like he lost his color in certain areas. They are like blotchy white splotches. Could this be stress or do you think it might be a secondary infection? By the way, thank you all for your help. It's very helpful for someone new to this kind of thing.

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