The heat doesn't work well, so the heater in my betta's 10g is on a lot. I have it set to 78 degrees. The temp in the fish room is right around 70 during the day. I am worried about it being on almost constantly. I have space heaters in the rooms I use most often and have considered moving one into the fish room, but I do not want to leave it unattended. It is an Ebo. I know the things are sturdy. Should I stop worrying?