I will have 2 water returns from the sump powered bu these babies:
Plumbed with silicone hose on the inlet and outlet to reduce noise:
I will use a large scooter battery as backup for the vectras.
I will use this to keep it charged:
And this step up voltage adapter for the vectras, it boosts voltage from 22v on the battery to the 36v needed by the vectras:
For internal circulation I will use the two Vortech MP60 that are working on my current setup along with two maxspect gure xf150 with the controller: