I have a tank what is 35cm*35cm*95cm height*width*length. My room temperature is 75.2-78.8 at the day time and 68 at night. I'm searching for a good method for heating this tank up. I did my own research about heating but i don't know what should i use. I think I can't use only an UTH, but I don't have money for a lamp and an UTH at the time. Maybe can I use one lamp and later on investing in a UTH?

I live in Hungary and i have only access to Exo Terra heating products.