Cleaner shrimp will not help; they can only eat external parasites and dead skin. Ich is internal, and one study I saw proved (kind of a strong word, but oh well) that cleaners do nothing for it. If he's in your 55G tank, he's probably very stressed, which weakens the immune system and helps bring on ich. From the rest of that (sump, fuge, T5s), you're off to a very good start. But I'm sorry, a blue hippo will not take a 55G tank. They require at least a 125 or 180.