Hello everyone, i bought my first ball python today! Seems to be in good health. Issue is my confusion,

20 GAL ACQUARIUM TANK
CAGE CARPET
REPTILE WATER DISH
HABBA HUT REPTILE REFUGE XXL
PLASTIC FAKE PLANTS
HEAT LIGHT
HEAT ROCK
Digital Temp and Humidity GAUGE

First i will say i was told heat rocks were junk because the snake dosent gauge heat very well and will burn itself or injure itself. I also heard that heat lights arent great because they evaporate too much humidity and can raise temperature in the tank too high. So i was thinking about a heatpad but where would they bask? they are required to have atleast one spot they can slither to, where its 90Degrees F. So my question is, what do i use to heat the tank during the day to keep the tank at 80 and what do i use for the spot its supposed to bask at 90 degrees during the day? And at night i want my snake to stay around 80 but also have a light on so i can watch him since hes nocturnal, would a blacklight do this, the light cant put off heat so.......anyone at all that can help me understand exactly what needs to happen please help me before i make a critical mistake and lose the snake, i bought it at about 1 1/2 FT TO 2 FT LONG.

Kyle