I've noticed the last week the cool end of the tanks temp has dropped from 75 to around 70. The first few weeks it stayed right around 75/76. Nothing has changed in my house and my room is actually very warm. Not sure what's up .
I bought the cheap thermometer from Petco which was like 8 dollars. This payday I'm going to buy a better one just to see if maybe the readings are in accurate.
But if it's not a problem with that what would be a good step to take? Buy a heat mat? Get a thermostat?
Also I noticed the warm end is only like 81/82. I'm just using the heat lamp that the other owners gave me. Should I look into another lamp? And if so is there any recommendations?
Yes you need to get an under tank heater and a thermostat is required. As for monitoring temperatures get a temp gun, makes it much easier when monitoring multiple enclosures. Here’s the section on heating and humidity