It should be a yellowish pee colour, sounds like its more 0 to me than 0.25. At 0.25 its a greeny colour. I dont know what to suggest for Glowy, the problems you've had are probably taking their toll, but from the sounds of those tests, its starting to get better.
Try holding the test tube for ammonia against the white card background with the light source (sun/lightbulb) behind you, it gives a better reading.
Have you still got some good aeration in the tank, with the filter flow?