Another possibility

I visited somebody who has a different view on a tank. It is not a tank but a pond. And I know stingrays are the most beautiful on top, but this is very beautiful. For someone with room enough this could be an option to build. If I had the space and the money I would go for something like this. I5t is a beautiful sight seeing the rays swimming between the rocks looking for food.

The story in short. The owner of this tank/pond had a swimming pool in his house but never swim in it. He decided to transform the tank in a huge aquarium.The dimensions are 26 x 16 x 5.5 foot ( length x width x height). It is very to get a nice picture of these hugh setup but with a little bit of photoshop the pictures turned out reasonable. And I just wanted to show you the pictures.

Click to enlarge