So I left last Friday and returned this evening (Sunday). I fed my fish before I left (did not feed them any more than normal...just a normal feeding) and when I returned, they all seemed lethargic except the Corys. I did an immediate water change since it was due today anyway. I also fed them after the water change. They all seemed like they wanted the food that was floating around them, but none of them would eat it. It almost seemed like they were blind or something. They were all excited because they knew there was food in the tank, they just weren't eating it. Some would float right past their face and they would act like they were trying to eat, but they would miss the food. They would open up as if trying to eat, but they would miss. It was seriously like they went blind. Does anyone know what happened? They have slowly began being able to eat pieces. Could it be because the light was off for two days and now that I turned it on, it like hurt their eyes or something?