Hi! So I've heard that bettas do better when they have a heater in their tank. I currently have a 2.5 gallon acrylic tank with one male beta, and I don't know if I can get a heater for an acrylic tank or what heater I should get. I've heard that the tank can warp and eventually break, so I've always been a little afraid of getting a heater. So what i'm asking is, should I get a heater with an acrylic tank? If so, what heater?