something of the sort..maybe..
this is my setup for my 3 monther..hes about an 1-1/2+ inches..
and try to give as much water as possible (10 gallons per inch is the minimum) but make sure the turt cannot escape (and considering they are a good swimmer!), a basking spot where they can easily get out of the water, uvb and heat lights/lamps, good filtration, thermometers, some vegetation, maybe a spot to hide out or explore in, and you should be good to go!..and of course you can add things as you go, just so long as the turt cant eat it!..or get stuck in/under it.. check out the photo gallery as well..