well now that you explain it i like it less!
it's a great idea, but there's definitively room for improvement. my fiancee and i, while trying to make heads or tails of it, thought of something i think would be better.
have that same design, but in a way that from the lowest level they can go around the wall, and behind the way the water level rises until they get to the end of the tank, and it's at the level of the highest part on the front of the tank, so they dont need to jump up, just swim around...
of course, then we'd need a way of holding back the water so it doesn't fill the front of the tank...ahhh
