Feeding help!!
This is my biggest ball python, Harry: ~1270g, 59”, and 15.5 years old. I’m having him professionally sexed next week to confirm he’s male.
(The first four pictures are of him at roughly 1330g. The next three pictures are of his enclosure and substrate change. The last picture is of him at about 1280g.)
I have a few husbandry questions:
His humidity used to stay around 55%. I recently changed his substrate from ~40% topsoil/40% cypress mulch/20% play sand to 50% topsoil/25% coco fiber/25% coco husk. After changing it yesterday, humidity is now around 63%. I also plan to add sphagnum moss and occasionally mist. Is there anything else I should do to keep humidity consistently higher?
He currently has a 50W halogen basking bulb + 100W CHE. During the day, the warm side is ~83°F, cool side ~75°F, and basking spot ~95°F. At night, the warm side drops to ~75°F and the cool side to the high 60s. About 50% of the screen top is covered with HVAC tape. Increasing the halogen wattage makes the basking spot too hot, and I haven’t been able to find a higher-wattage CHE. What would be the best way to raise the overall temperatures?
His body condition looks okay, but he has been gradually losing a few grams between feedings. He was eating one large rat (~90–100g) every 2 weeks, but apparently that isn’t maintaining his weight.
He previously became very lean at ~1000g while eating one large rat every 3 weeks, so his vet recommended feeding every 2 weeks. That brought him up to ~1350g, but after moving him into a larger enclosure, he has started gradually losing weight again despite continuing the every-2-week schedule.
Today I tried two medium rats instead: 62g + 65g (127g total). He weighs ~1270g. Does this seem like an appropriate feeding amount, or should I adjust the size/frequency?
Any advice from keepers with older/larger ball pythons is appreciated. Thank you!