I lost a few Cardinals and Platys in the past few days so i changed the light in my tank to a "blue moon" bulb. No dead fish and no aggression from the Clown Loaches anymore. An amazing transformation. Even my Psychotic Platy has calmed down.Is this my imagination or does the calm blue light actually change the atmosphere in the tank. It also looks better now as i changed the backround to a deep blue and it shimmers beautifully at night with all other lights off. My wife is getting worried about me spending hours staring at my fish..is this normal.?