Is there anyone can tell me what's happen to my discus? My discus "blue diamond" body become dark. what's going on? I just bought from LFS last week. I keep it in the tank with new water, heater "27celcius" and dark water. Anything is wrong from here? He eating when i'm feed him. I'm my mind, since he going to eat, so i don't think he is sick. BUT how come his body colors become dark?
