Originally Posted by DNangel
Sakura8- I do leave his light on at night, and i only use water conditioner (if that has any chemicals in it) i usually wait 24 hours till i put ken in his tank again.
Burd- Yeah, i can see myself a little lol.
It's probably the lights and sense it's dark at night he can probably see his reflection better. Do fish like it better dark at night? (i mean does the light bother them and do they prefer it dark?) I:
If his lights are on at night he is almost certainly getting a mirror effect from the tank when your room lights are off.
That being said, why do you leave them on at night? Bettas sleep just like we do; and appreciate having a dark area to rest in when they sleep.
I would definitely start turning the lights off at a designated "bedtime." For both my tanks, it happens to be 7pm. ;)