flaring at reflection

[thespiffymonkey]

Today my betta made his first bubble nest since I brought him home <yay> but when I have his light on he starts to flare at the wall of his tank under the nest and he just keeps flaring. I think he's flaring at his reflection because he stops when I turn off the light, however, he has never done this before, and I've been using this light for over a week.

How can I prevent this behavior while still using the light. I don't want him to get too stressed out, but I don't him to be in the dark all the time, his tank doesn't get much other light.

Thanks,

Laura

[Cheart99]

My betta flairs all the time at his tank walls. But he has gotten used to it and when he tires himself out he just does something else.