Why constantly soak in cold water when there's heat.

[RandyRhoads]

Ok i'm taking the heat light out and putting a regular low watt light bulb so it's not dark in the enclosure and just using the heat pad. But I tried turning it all off and just using the heat pad and she doesn't come out of the bowl. I assumed escaping the heat too, but even without heat she's in there. Why would she want to be under 70F at all let alone always? I thought burms needed higher temps than that at all times, or is that just when they want to be hotter than 70 they will?

Is ambient temperature important or just basking temps? Because 3/4 of the tank is about 75 and the other quarter is high.