So hey, i have my 4 month old ball python in a 20 gallon long, im using reptibark and i have a rock hide on warm side with UTH and temps of 90-92 on the substrate and the cold side with hide are about 73-75 range, humidity is always 55-60% i have the water bowl in the center and foil covering the top, but my ambient temps run 77-80 without anything covering the sides, its glass, and no lamp, he has done really well but what can i do to raise the ambient temp to the mid 80s, like only 5 degrees, im trying not to go overboard if i dont have to. if u need a pic i can send one after i get off work. Please help.