Not sure what KH/GH is but the water is supposed to be "medium hard". Dont have any number to give you. I've only had him for 3 days so I know it's early but I'm comparing him to my alligator gar which has never resisted any food.
A bad pic on the nose: http://postimage.org/image/jhtwzqxv9/
Just tested NH3 and it's 10 mg/l which is second lowest on the test.