Interesting. Do you know the style of pump used? It still could be a linear type motor with diaphram. Or it could be rotary vane or rocking piston. Not that it matters, just interesting to see what cfm output they are getting for the power usage and what maximum operating depth is.
Do you know of a web site?
I have a pond that could use solar if it becomes reasonably priced to do. It is my old pond, but am finding spending more and more time there with it.
