Using Nighttime Heating Bulbs on Betta Tank?
So I have a delightful little female betta named Tidbit who is in my 3 gal, heavily planted Walstad tank. Her tank is right next to my Aerogarden (with fluorescent grow lights) so her temps stay around 79.5 most of the day, and then go down to 76ish at night when the lights go out (our apartment temps are pretty solid). Unfortunately, we've had a recent cold spell that has the temp inside going down from there, and I don't want my little lady to get cold.
I've read too many horror stories about the mini heaters on small tanks cooking fish, so I was wondering if a nighttime reptile bulb would work for her. Obviously, distance from the tank could be adjusted so she wouldn't be too warm. I don't want to give her a normal heating bulb since bettas aren't big fans of bright light, especially all night long. Has anyone used a reptile bulb to heat a small tank?