all that overfeeding and waterchanging is a waste IMO. done that and dont care to again. I change water once every month or so, feed once everyday or every other day. treat them like any other fish and they do fine.
i change my water once a week and feed 1-2 times a day and my one discus is doing fine. he isn't very big, but i don't care to power grow them. seems unnatural to me. he is also starting to color up nicely.