I'm glad your frog is feeling better! A few good crickets or nightcrawlers a day should do him good. If you want to keep him I agree about the larger semi aquatic tank. He will Love swimming around once he is back to health. One thing my bullfrog (which is a similar setup to a green frog) loves to sit on is cork bark, it floats on water and he can sit on it. It is an inexpensive way to have a "perch" in the middle of the water rather than buying a overly priced plastic lily pad If you decide to opt out of the real one It is a few dollars online but could be found even cheaper at a pet store. My local sells it for $6 a pound (That would be a lot of cork!) I paid about 50 cents for my piece.

This is a link to what I mean if you don't know what I am talking about:

http://www.thatpetplace.com/core/med...cb78b94ba17c09