I have an adult curly hair that I've had for only a week or so, he's in a 10 gal that sits around 78 degrees usually. where I live his tank drops to around 55-60 degrees at night and I am wondering if I should get a red light heat lamp to keep it warmer or is it okay for it to be colder at night? Sorry if this is a dumb question, but I am a very beginner keeper and am unaware if this is a problem or not. Thank you!