Hi. I have a turtle (12" female RES) who currently lives in an indoor 110 gal. stock tank. Her tank is in the basement, near a small window. I am going to build an outdoor, above ground pond 8' x 4' x 3' using landscape timbers and pond liner on a concrete patio just outside the basement window. That will be her summer home, and I plan to include goldfish in it as well (I'd love 1-2 koi, but I'm not sure they would survive her). If I lose some goldfish, so be it, but I want to try. I want to figure out a way to build some kind of a protected runway so that she can move at will between her indoor and outdoor tanks until it gets too cold out in the winter. RES are good climbers, and love to explore. Also I need to find a way to include a substantial ground area that she can get to, both so she can nest to lay eggs and also for basking. Does anybody have any ideas for constructing the runway for her? It could either be permanent, with some way to close the window or slide a shutter across it during the winter, or it could be removable. I also need it to seal the window so that uninvited guests (neighborhood cats, etc) don't enter the house. She won't be exposed to many predators because the backyard is essentially a courtyard surrounded by buildings (can't get to it except through a house) but cats do live there and also I guess rats/mice. Plus, there are birds of course.