I do have a UTH on one end of a 30Gal glass tank. The UTH does a good job keeping the basking area around 90F. I insulated three of the four sides with foam boards. I do have clear wrap over 3/4 of my screen top. I am still having trouble getting my ambient temp up to 75F. Is the flexwatt heat tape the right medium to use if I want to get the ambient temp up? I am thinking of putting the FHT under the rest of the tank and setting the Thermostat to around 75F. Any thoughts or suggestions. Thank you in advance.