I agree with the oters...Without viewing windows in place, it is technically a pond, not a tank...Not saying it isn't inventive, I mean hey, who doesn't like 'structural duct tape', but a 'fish tank' is a container to *view* your fish in. This pond should be disqualified...
And I KNOW there is a neon gravel tank in among us...come on-show us the pics!
My current 'ugly' tank is only ugly cause I have a large fish net full of ceramic rings sitting on top of a Hydor sponge filter at the moment...