DIY Wavebox! (With modded MJ)

[smcnally]

So after looking someones Tunze wavebox, I realized they are very simple devices. The basic concept is that it pushes water from a box into the tank and then shuts off. Once off, the tank water fills the box back up which causes a constant displacement and replacement of tank water. So I thought "I bet I can make one of those". So I built a box (6" x 6" x 14") and mounted an Oceanflo modded MJ into it. I'm going to have to play with the timing a lot to get it right, but I thought this was pretty good for about 2 hours worth of work.

Here's a link to a video of it in action, and some pictures.
http://www.youtube.com/watch?v=vwIF1Mi-KyA