Ecosystem Koi Pond
Create a Living Backyard Retreat
Imagine stepping into your backyard and hearing the gentle sound of moving water. Colorful koi glide beneath blooming water lilies. Dragonflies dance across the surface. Birds stop for a drink. At dusk, frogs begin their evening chorus.
A professionally designed ecosystem pond transforms an ordinary landscape into a living destination that becomes more beautiful with every passing season.
Custom Ecosystem Ponds
Serving Homeowners Throughout
- Barrington
- Bristol
- Middletown
- Newport
- Portsmouth
- Tiverton
- Westerly
- Eastern Connecticut
- Southern Massachusetts
Why Choose Domina's Agway?
Unlike many contractors, we remain your long-term pond resource after installation.
Our Portsmouth location supplies premium koi, aquatic plants, fish food, water treatments, pumps, filtration components, and seasonal pond supplies. When questions arise, you’ll have a knowledgeable local team ready to help.
One Company. Complete Support.
- Professional pond design
- Expert installation
- Premium Aquascape components
- Aquatic plants and fish
- Seasonal maintenance support
- Ongoing education and guidance
What Is an Ecosystem Pond?
An ecosystem pond is a balanced, living water garden that combines fish, aquatic plants, biological filtration, waterfalls, and natural stone to create crystal-clear water without relying on constant chemical treatments.
Unlike traditional ornamental ponds, an ecosystem pond functions much like a natural lake. Each component works together to support a healthy environment that improves over time.
The result is a stunning backyard feature that attracts wildlife, creates a peaceful gathering space, and provides year-round enjoyment.
The Five Elements of a Healthy Ecosystem Pond
- Fish: Koi and goldfish bring movement, color, and personality to the pond. Many owners hand-feed their fish and develop a connection with them over time.
- Aquatic Plants: Water lilies, marginal plants, and submerged oxygenators provide beauty while naturally helping control algae and improve water quality.
- Beneficial Bacteria: Millions of beneficial bacteria colonize the rock and gravel surfaces, breaking down excess nutrients and maintaining biological balance.
- Filtration & Aeration: Professional filtration systems continuously circulate and oxygenate the water, supporting both fish health and water clarity.
- Natural Rock & Gravel: Natural stone creates a realistic appearance while providing critical surface area for beneficial bacteria to thrive. When these five elements work together, the pond becomes a healthy ecosystem that requires surprisingly little maintenance.
Ecosystem Pond vs. Pondless Waterfall
| Feature | Ecosystem Pond | Pondless Waterfall |
|---|---|---|
| Koi & Fish | Yes | No |
| Aquatic Plants | Extensive | Limited |
| Wildlife Attraction | Excellent | Moderate |
| Natural Ecosystem | Yes | No |
| Waterfall Sound | Yes | Yes |
| Four-Season Interest | Excellent | Good |
| Maintenance | Low | Very Low |
| Starting Investment | Higher | Lower |
FAQs About Ecosystem Ponds
Yes. Our ponds are designed with appropriate depth and circulation to support koi through New England winters.
No. Moving water and fish help prevent mosquito breeding.
Ecosystem Pond Investment
Every pond is custom built. Final pricing depends on size, site access, excavation requirements, filtration needs, waterfalls, and surrounding hardscape integration.
Small Ecosystem Pond
Starting at $15,000
Perfect for patios and small yards
Medium Ecosystem Pond
Starting at $25,000
Our most popular size
Large Ecosystem Pond
Starting at $45,000
Pricing includes everything listed above. Add-ons like LED lighting, additional fish, and premium plants available.
Every Installation Includes
- On-site consultation credit
- Custom Aquascape ecosystem design
- Professional excavation and installation
- EPDM liner and underlayment
- BioFalls biological filter
- Pond skimmer system
- Pump, plumbing, and aeration
- Natural rock and gravel
- Aquatic plants
- Starter beneficial bacteria treatment
- Owner training
- Seasonal care guide
- One-year installation warranty
- Manufacturer warranties on components
Optional upgrades such as landscape lighting, larger waterfalls, patios, and hardscape integration are quoted separately.
Why Rhode Island Homeowners Choose Ecosystem Ponds
- A Daily Escape: Many of our customers tell us their pond becomes their favorite place to start and end the day. Morning coffee beside a waterfall quickly becomes a cherished routine.
- Four Seasons of Beauty: Enjoy spring blooms, lush summer growth, vibrant autumn reflections, and dramatic winter ice formations.
- Wildlife Habitat: Ecosystem ponds naturally attract birds, butterflies, dragonflies, frogs, and other beneficial wildlife.
- Increased Property Appeal: A professionally installed pond creates a unique focal point that enhances outdoor living spaces and adds lasting character to your property.
- Built for New England Weather: Our ponds are designed specifically for Rhode Island's freeze-thaw cycles and seasonal weather patterns.
Our Design & Installation Process
1. On-Site Consultation
We visit your property to discuss your goals, evaluate the site, and develop recommendations.
Consultation Fee: $500, fully credited toward your project.
2. Custom Design
We create a pond design tailored to your property, budget, and vision.
3. Professional Installation
Most ecosystem ponds are completed within 3–5 days.
4. Fish & Plant Introduction
The ecosystem is established with carefully selected plants and fish.
5. Owner Walkthrough
We'll show you how everything works and provide seasonal care recommendations.
6. Ongoing Support
Our relationship continues long after construction is complete.
Ready to Build Your Backyard Ecosystem?
$500 Consultation Fee — Fully Credited Toward Your Project
Let's create a pond you'll enjoy for decades.
Schedule your on-site consultation today.