As far as lighting/heating goes I was wondering if it's okay to just have a ceramic heater in the tank. Our 50 gallon is in our living room which gets an amazing amount of sunlight, but I was wondering if the ceramic heater is okay for night time to. Should I leave it on at night or get a night time bulb?

We usually got to bed well after it gets dark (1-3am) so I was worried about them not really getting the whole day and night thing. I obviouly turn the lights in the house off at night, but I was wondering if they need a certain amount of "night time" is that a lame question???