No shut the UVB off ----- the T 8 needs to be UNOBSTRUCTED w/ NO screen ----- please get a piece of basking decor directly under the UVB 6-8 inches --- the screen will block 30 % of the rays you dont want that --- the hygrometer is a dial one ? You want to invest in a Exo Terra one that has a digital probe on it- place on the back center wall of the tank it will read your whole tank --- 40% is good
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