Absolutely no tape or sticky stuff inside the enclosure or anywhere a snake may come in contact...thats very important to the safety of the snake...if the 75 gal has a screen lid, wrap an adequate piece of cardboard in aluminum foil and cover the exposed screen opposite of the heat lamp to trap heat. To boost humidity, use a damp towel microwave for a min or two and place on top of screen also. Use in any combination to get your temp humidity #s correct as advised on the caresheet...hope this helps and good luck