My tank has overly adequate filtration and feedings and is always happy. However I've noticed that they're much more stressed out and lost their color(Red Devils, red severums, blood parrots). Don't worry, the red devil is the smallest of all and doesn't attack. The tank light has been off for a couple of days since I had to get a new extension cord and just turned them back on tonight. Could they be stressed because they haven't seen daylight for awhile? Also, they're in my bedroom where I don't sleep due to lack of AC, however, temperatures are stable and the room is kept dark most of the times. What could be the cause, water parameters should be fine due over filtration. Any help is appreciated.