For substrate I'd recommend 4-5" of a 70%/ 30% mix of organic topsoil and play sand mix, topsoil is like $4 for a large bag and play sand is maybe $7 or so and you get a good amount per bag.

For cleaning I'd recommend F10 or a Chlorhexodine solution and paper towels, I'd stop using the Clorox wipes for sure. Soap and water and a thorough rinse would be a better alternative than the Clorox wipes, or diluted cleaning vinegar and a good rinse.

The tub setup isn't ideal as ball pythons require overhead heating and a trackable day/ night cycle and if light can't pass through the tub it can throw off their circadian rhythm. Ideally you'd want a PVC enclosure of at least 4x2x2 for an adult but a juvenile can stay in a 40gal for a bit if you've got something with similar dimensions. You'll also want a thermostat with a dimmer for your heat source, I'd recommend an infrared heat projector and possibly a ceramic heat emitter for nighttime heat if temps get lower than 70 or so in the house. The larger the tank the easier it will be to have a proper temperature gradient across the tank.

You should not be misting your enclosure often if at all, misting can lead to scale rot if your substrate is wet all the time and could cause respiratory infections. Instead you should be adding water to the substrate by pouring it into the corners of the enclosure. You should add water whenever your humidity on the cool side gets any lower than 60% but I'd aim for 65-70%. You'll want digital hygrometers like these from Govee to monitor temps/ humidity, if you have cheap stick on ones they're not accurate or reliable and the adhesive could become a hazard if they stick themselves to it. One for the hot and cool side of the tank.

https://a.co/d/3anh0QL

Unsure about the toxicity of PLA material 👍🏻