Hi I'm new to the forum. I was thinking of purchasing a used 5' x 2' x 2' tank for either a male motoro ray or a reticulated ray. I've done some research and the teacup ray doesn't grow as big as the motoro. However, the motoros are hardier and easier to keep. I haven't purchased anything yet, and I only want the best for the animals, but is this tank too small for stingrays? If it is too small, what would be the minimum footprint for a motoro?