you might as well get a 300 liter tank, they will outgrow a 2ft or 3ft tank in a few years and its cheaper to do it once.
Filter id go with a external that can go that extra mile, they are filthy creatures so be prepared for weekly water changes of 100%
hot house is good, occasional pellet and blood worms for treats
temp 26-28 is good, make sure you have a heater guard as the tend to burn there feat by touching the heater element.
A good uv bulb that covers the basking area and some of the water, red eared tend to bask more than other turtle species a 2-3ft bulb will do the job nicely
they are wicked pets i have 5 snake necks and they are amazing