btw, make sure the peas are defrosted frozen peas, not canned. (you probly know that since you keep chiclids though).
Also, I would feed him a pea meal at least once a week. Mine usually has a couple days of normal meals, a day of fasting, and then a meal of pea(s), repeat.
And the melafix may also melt his fins. So, another reason not to use it.
Good Luck, I bet he's happy to be there.