About two years ago my son won this tiny RES at a local street fair. He was just about the size of a quarter. I found this site and with all the wonderful information found here I'm happy to say he is still alive and doing well. I say he because I'm not 100% sure but I am about 80% sure it's a male. He is currently in the same 20gal storage tote he's been in since we got him. He is not growing very fast and is still only about 2.5" in shell length. But seems very active and healthy.
But the time has come to upgrade him to his forever home. I have a spare room that I'm going to set up as a turtle/fish room. I've decided the turtle is going to go into an indoor pond/natural type habitat. I've been looking around and ideally would like to use the 100gal Rubbermade stock tank for him. However my wife found a 50gal preformed pond liner that she much prefers the look of. I've expressed my concerns with 50gals not being enough when he gets to be fully grown but she is really pushing me hard to not get the 100gal. I like the idea of having the extra water capacity as well as not having to build a strong support system for it as would have to with a pond liner. I looked at a 110gal pond liner but it would be way too big for the little room it's going into.
It's hard to say how big he is going to get but given his size at around two years I don't think he's going to be a big turtle. I'm pretty sure I know what the consensus here will be but is there any scenario in which the 50gal would be acceptable?