Hey guys, I'm new here but not to Bettas/fish. I do have a question though, do any of you know of any small heaters or a way to heat a 1g tank? I've never had smaller than a 10g (and those were betta/fry tanks in a really warm fish/reptile room that didn't need heaters unless I wanted to cook my fish lol) so I'm not sure what to use. I bought my friend a betta for Christmas since that is all she wanted but I didn't consider the fact her house is so cold before buying her one and now her fish is kind of lethargic. :/ I think she is a little dissapointed that my new betta is active and eats and hers lays on the bottom and won't eat. He doesn't look sick and swims fine so I'm pretty sure it is just from being in a cold room/water and being in a new place. She just got him yesterday. I offered to give her a 10g and heater but I don't know how her mom would feel about that size tank. So any ideas for heating something so small? And for the record her mom did approve the fish incase anyone wants to yell at me for giving an unwanted life. :P