Hello
so I think the A.titanum is because quite flexible. What do not like it, is direct summer sun, desert dry humidity and that the medium dry out.
Hab in my titanum also never seen, that they get because of low humidity, dry tips. In other species, such as A.hirsutus, this goes very quickly.
In the wild, you can see A.titanum in the deepest jungle, but also amidst the civilization in full sun. Have seen already images, where a Titanum located in a village next to a road is flourishing.
Should also on it, that decrease the temperatures not below 20 degrees.
I would use blankets in the winter so that you must heat the room not on 23-25 degrees.
Because you can take the simple mats from the PetShop. To regulate the mats goes it at the hardware store and buys a cord dimmer.
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It may be that the mat then hums in the dimmed state, but that does not harm the mat and the function is not impaired.
Alternatively, you can use following heating pad with stock thermostat:
Biogreen heating pad
I have to say my 3 titanum in a normal room and the like it as well. Due to the many plants I have 72% humidity in the room
MfG
Stephan