We have the Aqueon Widescreen LED 13 gallon tank. The heater it comes with is preset at 76. It ranges usually from 76.6 - 76.8. We want to get a heater we can regulate to a warmer temperature for our new betta, but there are soooo many! I did a search on here and went through a few pages, but didn't really see anything for our size tank. It's a tall thin tank, so we want something that doesn't take up a lot of room and has the auto shut off. Any recommendations would be greatly appreciated!