Hrmm - that one looks interesting ! Here's where I got mine:
http://tropicalreefcorals.com/produc...id_product=155
Quite honest, I am on the fence with what design I like better. The one that Scott found is nice - because both electrodes are on the same wand. The one I ordered the electrodes are separate; which may mean that its easier to replace/maintain in the future.....Granted I don't think you'll go through electrodes anytime soon - but it IS saltwater; and damn these things are expensive.