We finished rebuilding the koi pond located in Hacienda Heights. We cut out the old concrete floor and wall to enlarge and deepen the pond. We removed the center island and concrete bridges. Installed six 4" bottom drains and two 4" skimmers. We rebar, shotcreted and waterproofed the concrete pond with Xypex. Rebuild the south bridge with redwood and built a new 10x15' redwood deck for viewing lounge. Installed 12 led underwater lights. We discarded the old swimming pool filtration, dug the filter room 4 feet down, ran the entire 4" plumbing under a tunnel and install 2x Profidrum Eco 65/40 and custom made moving bed bio. Reconnect the return to existing four waterfalls and 4 new 2" TPRs, all flow powered bytwo Flowfriend pumps. It took approximately 8 weeks from start to finish. With custom built-in UV light inside the rdf and carbon filter as chlorine removal, the pond now holds 12000 gallons and set to move approximately 25000 gallon per hour. The entire system is capable to handle 30000 gallon per hour.

This was a very challanging project, We had few very difficult moments such as not having enough height clearance for mini excavator to pass through the house roof line - We had to take down the canopy. And when we were digging and sorting out the old plumbing under the filter room, one of us accidently hit a hidden waterline and flooded the room, we turned it to a mud wrestling ring in an instant. This just to name a few.

Although difficult and challanging, We are very proud with what we had accomplished!

Vince
Creative Zen, Inc

Some filtration room work pictures:

These are what the pond had:



Our team hard at work






With the amount of concrete we had, there was no way that We could break em all by jackhammer.









Some plumbing work pictures





Some tunnel work









And to their final position spaced out accordingly, ready for the rdfs.







After we did the rebar work, we had Rocks and Pumps did the shotcrete for us.