Is your heat pad on a thermostat? You can get a hydro farm from eBay for about $30. Herp stats are much better if you're willing to spend the money, but a hydro farm is better than nothing! Also, what are you monitoring your temps with? A digital thermometer, temp gun, one of those stick on gauges? You should have 2 hiding spots- one on the hot side and one on the cold side.
There are lots of great care guides on here- you should definitely give them a read so you'll have an idea of what kind of care your new BP will need!
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