Its a 4x2x2. Thank you! I wish i did Better lol. Is there basking bulbs that give off UVB? Im in a house. Its 94 years old. When it was built they didnt put insulation in the walls -_-What are the dimensions of the tank ? You did a nice job on it ! The t8 can be mounted inside if need be. And yes since your house gets so cold at night it's good to have the heat at night. Are you in an apartment or have a house ?