Hmmm, interesting idea. I would actually only need one union (which I plan to install anyway since I'm re-plumbing for a different motor height) because the pump outlet to the filter is plumbed with a piece of clear reinforced flexible hose attached with a hose clamp.

I'll have to think about the electrical connections and come up with a way to protect the coupling from the elements.

Thanks for the suggestion.

Did I say something about not wanting to create more work for myself...? D'oh!

R-