I'm a pretty novice betta owner, (I just found out that my new betta is a crown tail betta!), and I was wondering about the light on the tank. It seems he zooms around, and flares up (especially in one corner) but with the light off he is more calm, and slightly less active. Are lights not recommended for bettas? As well, what should I do about the corner where he keeps seeing himself and getting upset about it?
Another question too: Does the tank need to be heated? The water should be at room temperature, and we have a filter.
Thanks for the help guys!