My 20g grow out / hospital is going to be free in a few days once I put my JD back in her tank. What would you guys put in a 20gal? 
My girlfriend has wanted a salt water tank for a long time, maybe we could turn it into that.
Also, on a side note, I'm going to be getting a 320gal plywood tank within the next four years, so the Jaguar, when he's larger, will be put in there with some other big cichlids. Meaning the 20gal doesn't need to be a permanent home and I can upgrade it in a few years.

My girlfriend has wanted a salt water tank for a long time, maybe we could turn it into that.
Also, on a side note, I'm going to be getting a 320gal plywood tank within the next four years, so the Jaguar, when he's larger, will be put in there with some other big cichlids. Meaning the 20gal doesn't need to be a permanent home and I can upgrade it in a few years.