I have a 20 gallon tank with one RES. He's about half the size of my hand. During the summer his tank temperature is just fine. But now that its winter its only 70 degress (air temperature). I need a heater!!! I have seen the under the cage 'pad' heaters, the red bulb heaters, and the ceramic heaters. I was wondering which one is best. I have a basking lamp, but its not enough. Also, I only have a little round fluker's thermometer, the one you stick to the inside of the cage, and i was wondering what thermometer to get to measure the water temperature.


