Okay. First off. This is my first Ball Python, and my fiance and I both got one. They are in the same tank until tomorrow. But already ive noticed a slight problem with the temperature. We bought the Snake kit from petco, but the snakes from a breeder. the kit came with: 1) Day Blue Light 75W 2) Night Black Heat Bulb 75 WIm doing 12 hour timers, buying one tomorrow. But, the bulbs dont seem to be heating the terrarium quite enough? its averaging at 78-80. from what ive read this isnt great. would a 100W bulb be sufficient? or should i invest in a heat mat? its a 20-Long Glass Terrarium. And can someone please explain the day and night bulbs? do they both put off heat? should it be enough to warm my snake? etc.