Building the best and fixing the rest · Mon–Fri 8–4 · Sat 9–5 · Orange, CA · Serving Southern California & Arizona [email protected]
Koi Pros

Tustin pond builders, water feature care and leak repair

Tustin Ranch HOAs and North Tustin acreage properties; we run monthly service routes through both.

    Request an assessment

    Tell us about the feature and where it is. We reply within one business day.








    Or call (714) 613-0123. No marketing emails; we only follow up about your request.

    Showa and kohaku koi through an acrylic viewing window
    Showa and kohaku through the viewing window
    Multi-tier estate stream and waterfall lit at night
    Estate stream, lit for evening
    Raised formal koi pond with stacked-stone spillway wall and stamped concrete
    Raised formal koi pond with spillway wall

    Pond and water feature conditions in Tustin

    Every pond, fountain and lake is a small ecosystem that answers to local conditions. These are the ones that shape how we build and service water features in Tustin.

    Tap water and fill water

    City of Tustin water is mostly local groundwater with imported supplement; moderately hard and chloraminated. Some wells run high in nitrate before treatment, which is why we test tap water as well as pond water on the first visit.

    Heat, evaporation and wind

    Inland-valley: upper 80s in summer, warmer up Tustin Ranch against the hills, mild winters.

    Soil, grade and excavation

    Loam on the flats, clay and sandstone in Tustin Ranch and the North Tustin foothills with sloped lots and retaining walls.

    Predators and wildlife

    Herons from Peters Canyon Reservoir, raccoons along Peters Canyon Wash, coyotes in the foothills.

    Black-crowned night heron holding a fish
    Night herons hunt after dark, when most deterrents are off

    Leaf and debris load

    Mature oaks, sycamores and eucalyptus in North Tustin; HOA slope plantings in Tustin Ranch shed year-round.

    Modern koi channel with floating concrete pavers along a glass wall
    Modern koi channel with floating pavers

    Water features we build and service in Tustin

    Acreage estates in unincorporated North Tustin (Cowan Heights, Lemon Heights) with large naturalistic ponds, Tustin Ranch HOAs with streams and entry fountains, and newer Tustin Legacy communities with community water features.

    Neighborhoods and communities we work in: Tustin Ranch, North Tustin, Cowan Heights, Lemon Heights, Tustin Legacy, Old Town Tustin.

    Residential pond, waterfall and fountain services

    Design and construction

    Scheduled care

    Repair and water loss

    Commercial water feature services in Tustin

    Property types

    Lake and large-feature programs

    How Tustin service is scheduled

    Tustin is inside our Orange County home route. Assessments, repairs and maintenance visits are scheduled within days, and emergency aeration can be on-site the same day for maintenance clients.

    Local water features worth knowing

    If you want to see what balanced water looks like at scale before planning your own feature, Tustin has good public examples nearby: Peters Canyon Regional Park reservoir; Tustin Ranch golf course lakes; Tustin Legacy park water features. The same principles — depth, circulation, filtration sized to the biological load, and shade — apply to a backyard koi pond.

    Nearby cities

    Pond and water feature service in Tustin

    Koi ponds, waterfalls, fountains and lakes, built and cared for by crews based 30 minutes away in Orange.

    Work in Tustin

    Photos from Tustin projects go here as they are completed. Each one links to a project page.

    See more pond, waterfall and fountain projects

    Pond care guides for Tustin owners

    Construction · 9 min

    Koi Pond Installation: What Every Homeowner Should Know

    How to plan, design, and maintain a koi pond. Koi pond installation steps, costs, and why hiring a professional...

    Maintenance · 20 min

    Seasonal Pond Maintenance in California: Year-Round Care Guide

    Seasonal pond maintenance in California covers water chemistry, algae control, equipment inspection, and fish care...

    Maintenance · 7 min

    How to Clean Green Water in Your Pond

    Struggling with green water in your pond? Learn proven tips to clear algae, improve filtration, and restore clean,...

    All pond care guides

    Koi Pros pond design and construction projects

    Check out Koi Pros projects

    Koi ponds and water features we've designed, built and maintain across Southern California, from the crews that serve Tustin.

    Pond service questions from Tustin

    Is Tustin tap water safe for koi?

    Yes, once it's treated. City of Tustin water is mostly local groundwater with imported supplement; moderately hard and chloraminated. Some wells run high in nitrate before treatment, which is why we test tap water as well as pond water on the first visit. We dechlorinate every refill and top-off and test the tap on the first visit.

    Why does my Tustin pond turn green every summer?

    Heat, light and nutrients. Inland-valley: upper 80s in summer, warmer up Tustin Ranch against the hills, mild winters. Add the local leaf and debris load (Mature oaks, sycamores and eucalyptus in North Tustin; HOA slope plantings in Tustin Ranch shed year-round) and an undersized filter can't keep up. UV clarification, shade and a maintenance schedule fix it.

    What's eating the fish in my pond?

    Herons from Peters Canyon Reservoir, raccoons along Peters Canyon Wash, coyotes in the foothills. Depth of 3–4 ft, overhangs, fish caves and motion-activated deterrents are the fixes that actually work; netting is the last resort.

    How much does koi pond maintenance cost here?

    Monthly residential service is priced by pond volume, fish load and access, and quoted after a first visit. Most local homeowners land on a monthly plan with a spring clean-out; we'll tell you if your pond needs less.

    Do you build new koi ponds locally?

    Yes. Loam on the flats, clay and sandstone in Tustin Ranch and the North Tustin foothills with sloped lots and retaining walls. We plan the excavation and base around that, then design filtration, rockwork and planting for a fixed-scope quote.

    Pond or fountain in Tustin?

    Schedule an on-site assessment. We'll test the water, check the equipment and tell you what it needs.

    Call Request assessment