Newbie

[Rxking]

Hey Guys, I looked for a FAQ section and didn't see it. I'm a first time snake owner and think I have a problem. I was told at the reptile show, where I purchased my small ball python, that everything I needed for his terriarium was in the kit. It included a heating pad that mounts the the bottom of the terrarium and simply plugs into the wall, there is not tempature control. From what I read I gathered I needed to get a thermometer and bought one. What found out is that temp is dropping down to 70 at night and only up to 75 or so during the day.
From what I read that's not warm enough, so I went out and bought a heat lamp and put that on, I also bought a second thermometer for the warm side. Now during the day with my lamp on the temp says 86 on warm side and 75-80 on cool.
I'm guessing that's ok but I have to turn the light off at night, it's in my daughters bedroom. When I do the temp drops to 70.

Do they make pads that can get warmer? Or can be adjusted? Should I just add a second pad?

The snake is obviously cold in the morning and I need to fix this ASAP. Thanks for the help in advance.