It just seems like a snub of an answer when someone asks a legitimate question and gets a full on questionnaire for a response.
Its alot easier to find the info when people USE the questionnaire then to read through a novel. There is a reason why its stickied in the first place.
Did he start getting weird after the water change? Maybe you forgot to add conditioner or something go into the water, like a chemical or something on your hands. Do you notice anything physically wrong like fuzzies, white spots, ect on his body?
I would try doing another water change, just to make sure noting nasty got into the water to upset him. my mother is constantly using stuff like febreeze around my fish that are in the kitchen. Did you or anyone else spray or use harsh chemicals in his vacinity?
ditto on the test strips. I had them at first and they were very hard to read. If you can, go with the liquid test kit. I can test all 3 but usually only do the ammonia test.