Deep, well-filtered ponds built for koi, with the volume, circulation and safety features that keep big fish healthy for decades.
Koi are long-lived, growing fish that reward a well-built home. A koi pond is not just a bigger water garden. It needs depth for winter and summer comfort, strong filtration for the waste of large fish, steady oxygen and a design that makes it easy to net, feed and watch them.
We build koi ponds with steep walls, generous depth, bottom drains where the design calls for them and mechanical plus biological filtration sized to the number of fish you plan to keep. Netting, shading and predator protection are part of the plan from the start.
Koi do better in deep, larger volumes of water. Depth buffers temperature swings and gives fish a place to retreat in heat and cold. We plan the pond for the fish you want to own in a few years, not only the ones you buy this spring.
Fish waste is the main load on a koi pond. We pair a mechanical stage that catches solids with a biological stage that turns ammonia into something harmless, and we size both generously.
Herons and raccoons find koi quickly. Steep sides, deep water, netting options and sheltered ledges give fish safety, and a clear viewing edge lets you enjoy them up close.
Large koi are easier to catch and inspect in a pond with a shallow shelf or a sock net area. We build one in so health checks do not turn into stressful chases.
Drag the handle to compare.
BeforeAfterDepth and volume for growing koi.
Mechanical and biological stages.
Water moves through the whole pond.
Steep sides and net options.
Clear edge for close-up enjoyment.
Water conditioned before fish arrive.
Every topic has its own page with what to expect and how we approach it.
SituationKoi Pond PlanningWhat it takes to keep koi well: pond size, depth, filtration, feeding and the realistic costs of ownership.Learn more 
SituationPond FishGoldfish, shubunkins and other smaller pond fish: stocking numbers, feeding and keeping them happy in a garden pond.Learn more 
Material guidePond FiltersSkimmer filters, pressurized filters, gravity filters, drum filters and bog filters compared for different ponds.Learn more Enter length, width and average depth and see the gallons your pond holds, the pump flow to aim for and the water for a first fill.
Tell us what you have in mind and send photos of your yard. We plan the visit so we arrive ready.
We walk the yard, discuss size, style and sound and mark the shape on the ground.
You get a clear written price, and we agree on a day and an arrival window.
Excavation with shelves and a stable slope, with protection for your lawn and a call to 811 first.
Liner, plumbing, filtration, stone and plants installed with careful attention to the hidden parts.
Water treated, flow tuned and a walk-through with you before we leave.
Three feet is a common minimum and deeper is better for large fish. We discuss depth with your goals and the way the pond will be used.
Not immediately. A new pond needs time for beneficial bacteria to establish, and we explain a safe, gradual way to add fish.
Not always, but many serious koi ponds use one because it pulls waste to the filter. We discuss whether it suits your pond.
Yes, in a pond with enough depth and a spot for gas exchange. We help you prepare the pond for the colder months.
We design for it, with a calm viewing edge and a place to net fish gently when needed.
Pond FiltrationMechanical and biological filtration sized to the pond and the fish so the water stays clear all season.Explore 
Pond AerationAir diffusers, bottom aerators and fountain aerators that keep oxygen up through hot summer weeks and winter ice.Explore 
Koi and Fish HealthWater testing, feeding plans, stocking advice and early-warning checks that keep pond fish healthy and growing.Explore 
UV ClarifiersUltraviolet clarifiers, bacteria and water conditioners that turn green water clear when used the right way.Explore Tell us about the job and we will call you back quickly.
Or call (615) 357-7797 to talk now.
