Hi I’m having issues with heating and I’m being torn 1million ways I just want what’s best for my big boy who’s a special guy I was given to by a friend who does after I got him have the spider gene I believe? I say he but waiting on his shed results… anyways back to the point he’s my only one at the moment with a pvc enclosure my others are in glass aquariums I have fixed up I have no trouble with heat or humidity anymore…but after research I’ve found pvc is best but boy am I having problems with temps and humidity my facebook group told me halogen lights are horrible… and don’t use heat mats…no red lights don’t use any lights so now I’m totally questioning everything and I was pointed to a ceramic heat lamp as his only heat source and it’s not doing what it needs to do at all! I’m not looking for criticism I just need some advice please I’m attaching pics of the enclosure the random temps and my special boy for extra tax there was a few days his humidity was bumped up due to shed… but lord please help yall 
I’m welcome to any sorts of tips and tricks please
I don’t keep BPs, but there’s no way that an 80W Arcadia Deep Heat Projector bulb and 20W large heat mat used together can’t achieve what you need. For a BP, I imagine you want to cover most of that screen top where the DHP isn’t for humidity retention.
Green Room Pythons has done great videos on set ups and such. The heat source i use for my ball pythons are RHPs.
For PVC enclosures I really like radiant heat panels. They have a higher sticker price than most other options, but they last for ages (like literal decades in some cases), so you don’t need to periodically replace them the way you do with most other heating elements. In my experience, they seem to provide the most stable and even heat of anything I’ve tried (when paired with a pulse proportional or dimming thermostat), and they’re good for raising ambient temps in addition to providing a hot spot.
Edit: Plus they’re much safer to mount inside a PVC enclosure than something like a ceramic heat emitter or deep heat projector.
That viv looks very similar to the viv my royal is in and I had to put correx and foil on the top, and cover some of the vents to get the heat where it needed to be
I’ve been looking into those. I’m just trying to see which size I would need exactly and I cannot seem to find answers on Google.
For a 4’x2’ cage, it kind of depends on how cool your snake room gets. If it stays 70F+, I think you’d be fine with 40w. If the room is consistently on the cooler side, you might want a more powerful one.
I use an 80w on a cage that’s 5x2x2 in a room that can get a bit chilly at night (low 60s), and it’s been perfect. So unless your snake room is really cold, I think a 40w would do the trick for a 4’ cage.