my set up is a 20 gal screen top with aluminum foil on one side and a light on the other (blacklight for night and bluelight for day) and another basking light focused on her branch on the side of the viv. hide is half on the cool and half on the hot side. i have an UTH that stays on medium (my apartment is about 68-70 degrees so low doesn't raise the temps enough). i use a sponge and spray water for humidity. water dish is on the cool side. the thermometer is on the back wall (hot side) close to the ground. the temp reads between 83 and 90 all the time (fluctuating a few degrees, mostly at night). i don't know the exact temp, but the basking area is concentrated under a light so the temp is a bit higher there (not too much though because the light isnt strong and it's on the other side of the glass). the cool side is 75-80 because it's under the aluminum foil to keep the heat in, but there's no direct heat source.