Here’s what the site looked like when the owner started
Finished Filtration furnished by High Desert Koi Ponds. A 4″ BD flows to the Cetus Sieve, then to a Performance Pro Arteasian pump to the Nexus 300. The outlet water from the Nexus then flows to three 2″ TPRs
Skimmer water from the lg Savio Skimmer flows to another Performance Pro Arteasian pump to an Advantage Bead Filter and then to the two waterfalls.
And the finished pond