Argus occasionally goes on hunger strikes that last a week or so, but lately, her appetite has been really off. :/ Since Christmas, she's been taking hardly any food -- a single feeder, and striking a second or third one before spitting them out. She's going on nearly a month without eating, and this morning I've caught her listing to the one side with her head tilted up, and she is not paying attention to where the aquarium ends -- she swims slowly, hardly uses one of her pectoral fins, and only brakes a little bit before bumping her chin off the acrylic. Any idea what might be affecting her? More importantly, any idea on what might a good way to treat her or the whole tank? She's my first pbass and I haven't had her nearly long enough (2 years!) for me to just write the illness off to old age!! What should my next step be? 
Tank and Water Parameters
300 gallon with two FX5s
50% weekly water changes
82*F Temperature
30 GH
80 KH
pH 7.5
Ammonia 0.0
Nitrite 0.0
Nitrate 20-30 ppm




Tank and Water Parameters
300 gallon with two FX5s
50% weekly water changes
82*F Temperature
30 GH
80 KH
pH 7.5
Ammonia 0.0
Nitrite 0.0
Nitrate 20-30 ppm



