Sniperhank
Giant Clam Addict
Those levels are all just fine. I wouldn't worry about doing anything outside of what you are already doing to control the parameters in the water column.
As for the bullying, I would assume that it is what is causing the issues with the firefish and the other clown. A fish won't get sick if it isn't stressed out.
As for the bullying, I would assume that it is what is causing the issues with the firefish and the other clown. A fish won't get sick if it isn't stressed out.