i want to use my current tank (15g long) for mice and switch my BP over to a slightly larger tank (20g long) because the current UTH covers almost the whole tank the snake is in right now. it is my understanding that you should only have a UTH on half or less of the tank.

i do not have any money to buy a new UTH so i figured id try to remove it and move it over to the larger tank.

soooo....how do i go about removing it and attaching it to the new tank without damaging it?

or would i be better off with selling the tank my BP is in right now and just buy another UTH? what size UTH should i have for a 20 gallon long?