Yay!
Can you show a photo? I have long thought that moving water would be worth trying. If you don't have a photo of yours, can you find something online that is similar?
I wish I could just change my water out a couple times a day like those that don't heat it. Since I'm at work, I need a different way.
It was similar to this but had a flat back... We glued a funnel on top to keep them from jumping up on it.