I just got my betta Delfino on Wednesday and so far we seem to be doing well ^^ He's pretty active and curious but I think he has a somewhat cautious personality.
Right now, he's living in a one gallon tank given to me by a friend. I should be getting a ten gallon tank for him soon though. The tank has a filter and a light, and the light helps keep the water pretty warm. I also have a love/hate relationship with my air conditioning, so I have the air vent mostly blocked- it stays very warm in my bedroom.
My question is about the light in his tank. The tank does not have a heater- I had read that a heater could be difficult to regulate and possibly dangerous for a smaller tank. The light is on all day, but I have been turning it off at night to give Delfino the chance to rest. However, is this the right thing to do?