If I had an extra pump in hand I would mount the second one and plumb with a monual bypass. If you ever have a failure just change the valves to use the backup.....But thats just how Id do it.
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2020 Precept 34G,
600w 24v solar, Victron 100/50 -BMV712 LiBim 225 BB 200ah. Stehl Dolly, Safe - T- Plus. More to install
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