I’ve been able to complete all electrical and plumbing for my aquaponics garden.   This week the pump arrived.  I ordered a Lifegard Quiet One 4000 pump rated a ~900GPH.

Along with this main pump, I installed an emergency backup pump.  This is nothing more than a bilge pump which is used just to aerate and circulate the water in the pond in the event of a power outage.   It will run off of a 12 deep cycle battery.   To make this work, I wired in a 12v relay which is powered by a “wall wart” plug/transformer I had stored in the attic from some long lost device.   I found a deal on five of these relays with the pig tail plugs for $4.99 on Amazon.

This is how my electrical and plumbing looks:

All that is left is to buy the rock for the garden bed, then start the water cycling and add plants.   Once the water has cycled and is stable, I will add fish to the pond.   Then it will be on to finishing the rest of the backyard, some crushed granite, a tree, and that should be it.