Hello, the dementions are Width: 60.5"
Height: 25"
Depth: 18.5" A tank volume calculator said it is actually about 120? The person who gave it to me guessed 250, said he couldn't remember. He bought it almost 10 years ago. Also don't worry, I would never mix types if it could be a problem. I just wasn't sure if anyone knew of types that did work well together. I just want to make sure that whatever type of frogs I pick will have plenty of room and be very happy.