One and a half year old snake, 50 grams?

[Yodawagon]

He definitely needs to be eating larger Mice. Also when something is hanging out that should be inside for 2 months its not a good sign. Why did you wait that long to have it looked at by a vet? Sounds like you got the old petco/petsmart experience.

[Pippers]

What are you using to regulate and measure your heat sources?

A petco temperature reader on the right wall of the cage (cool side during the day and hotspot during the night)
A zilla humidity and temperature gauge in the center
A temperature gauge strip on the left wall of the cage as well as on the right.

I'm not using anything to regulate them, money is tight at the moment.

[Pippers]

He definitely needs to be eating larger Mice.

I've known forever that mice size needs to scale with his size. Yes he SHOULD be eating bigger mice at his age but his body size is that of a hatchling.

[PitOnTheProwl]

A petco temperature reader on the right wall of the cage (cool side during the day and hotspot during the night)
A zilla humidity and temperature gauge in the center
A temperature gauge strip on the left wall of the cage as well as on the right.

I'm not using anything to regulate them, money is tight at the moment.

First off, unplug your heat mat now. You are probably cooking him when he is on it.

This was after about 10 minutes or less of running unregulated.

Second your humidity is probably no where what you think it is.
All those gauges you have in there are only giving you ambient temperatures, you have nothing telling you what the surface of your hot side is.
Husbandry is 99% of the problem with problem reptiles.
You might be able to save him if you correct these issues.

Trust me I know about tight money. I have been unemployed for almost 2 month and my wifes check covers all of our bills, debt and animal needs.

You can get a lamp dimmer at Lowes or HomeDepot for less than $10
You can get a thermostat (hydrofarm) for $30 from Amazon or check with your local garden centers.
A Sterilite tub is $5 or less from Walmart
You already have paper towels and water bowls....
Don't spend so much on what it looks like, spend on doing it right for them.

[PitOnTheProwl]

and you can also get a Non Contact thermometer for less than $30 from Lowes, Home Depot or Reptile Basics.

[Pippers]

Not to question your wisdom but, why would I need a lamp dimmer? My temps aren't hot enough, wouldn't that just escalate the problem?

And you are also suggesting dumping the tank and just using a sterilite tub? I've seen those everywhere, been thinking about it. Though I feel like he enjoys the comfort of his bedding and furniture, or is that just me.

[PitOnTheProwl]

Not to question your wisdom but, why would I need a lamp dimmer? My temps aren't hot enough, wouldn't that just escalate the problem?

And you are also suggesting dumping the tank and just using a sterilite tub? I've seen those everywhere, been thinking about it. Though I feel like he enjoys the comfort of his bedding and furniture, or is that just me.

What is the surface temperature of the glass where your heatmat is?

And yes, sell the tank on craigslist or one of your local facebook groups to offset the costs of changing.

[Pippers]

I'm sorry to say but I'm not quite sure, I don't have a means of finding out. Though I unplugged it.

I'm not sure how I will keep the temps and humidity up in a sterilite tub, there's no where to put any of the utilities. I live in the northeast and it gets very cold so I feel like the tank is the best option for customizing the conditions.

[PitOnTheProwl]

A lamp dimmer would give you a poor mans way of regulating the temperature of the mat BUT you still need a way to check the temperature.

[Pippers]

Obviously there's a slight deficiency in his conditions but do you think this could be the cause for no weight gain whatsoever since birth? Or is it indeed underfeeding