Aquatic turtles and tree frogs together?

So, in my painted turtle tank there's about a foot of unused space at the top (it wouldn't have been the tank I chose, but it was at a garage sale and it was free:P). I was wondering, would it be possible to keep tree frogs in there to fill up the space? With all the repti-hammocks and suction-cup branches out there on the market, I'm sure it would be feasible. But would it be a good idea?

(Sorry if this is in the wrong section btw, I was torn between the Chelonia and Amphibia sections...:oops:)

I would definitely not recommend it, while it is feasible, if a frog was to fall, it would be history. Also, it would be hard to provide the environmental requirements for both species. What I would do is raise the water level a good bit, and maybe add some fast fish, or a Pleco.

How big is the tank? How much water do you have in it?

I wouldn't recommend mixing unless you have a huge tank you could put a decent amount of land in. Even then, the height probably isn't good enough for most frogs. Those painteds are aquatic so the tank should be close to full as it is.

Not only would your frog be a possible snack, it would be almost impossible to keep the cage clean enough for frogs. Amphibians absorb everything through their skin, and sharing a tank with a turtle would not be a good idea. Even keeping different species of frogs together isn't a good idea. While turtles and frogs may share similar environments in the wild, they are not forced to stay in a confined area. Maybe you could use some reptile safe plants to use the upper space of the tank?