What wattage bulb did you put in the heat lamp? You can use actual household bulbs and try diff wattages until you find one that works to get right temp. You might only need a 40 or 60 watt in the summer, but as it gets cooler might have to upgrade to a higher watt. Could also buy an "arm" for the lamp which you could use to hold the heat lamp at different distances from the tank as opposed to just laying it directly on the lid, that's another way to achieve the desired temp. Be careful with the UTH. The Aspen will hold the heat in and if you put your hand on the glass over the UTH you'll be surprised how hot the glass can get. The carpet under the aspen will help unless your snake is able to get under the carpet. A rheostat is a really good idea to use with a UTH.
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Have you been hugged by your snake today?
Ball Pythons
1.1 het Caramel Albino (Edward & Bella)
0.1 poss het Caramel Albino (Rosalie)
0.1 Caramel Albino (Bellatrix)
0.1 High Contrast Albino (Princess Buttercup)
0.1 Pastel Orange Ghost (Nagini)
1.0 Butterscotch Ghost (Nick)
0.1 Spider poss het Butterscotch Ghost(Nymphadora)
1.1 Mojave (Lucius & Renesme)
0.1 Pastel Lesser (Narcissa)
0.1 Pinstripe (Arwen)
1.0 Pewter (Salazar)
0.1 Bumble Bee (Alice)
0.1 Lemonblast (Luna)
0.1 Blond Pastel (Katie)
1.0 Bell Pastel (Jasper)
0.1 African Dinker (Esme)
0.0.9 Eggs in the incubator (Edward x Bella)
Corns
1.1 het Amel, Anery, Charcoal, Bloodred (Romeo & Juliet)
1.0 Blizzard het Bloodred poss het Anery Lav (Tumnus)
0.1 Granite (Ravenclaw)
0.1 Fire het Anery (Ginny)
0.1 Anery Lav (Lucy)
0.1 Plasma (Victoria)
0.1 Opal (Jewel)
0.0.23 Eggs in the incubator (Romeo x Juliet)
0.0.18 Eggs in the incubator (Tumnus x Lucy)
Hogs
1.0 Albino Western (Hogwarts)
0.1 het Albino Western (Hufflepuff)
0.1 Tri Color (Molly)