Yes, I agree with your post. That's why I'm curious about longevity. I know membranes have to be "scoured" by the water
flowing through them. And I keep hearing about folks using Higher volume membranes with low flow "home made" watermakers.
Someone even wrote that their Village Marine watermaker
was using an SW30-2521 membrane, right from the factory.
My plan was to use a 1gpm wanner pump at one third speed (geared belt) and a Village Marine
"dogbone" shaped membrane, which will accept 0.25 gpm flow.
As much as I'd love to have a Spectra unit, I don't see that happening.
Cheers, and thanks, Tellie, for all your great advice on this forum.