Two-Tier Koi Pond & Pagoda Aquarium

Koi pond installation in Nairobi: two-tier pagoda design

A two-tier koi pond combines a lower pond for fish with a raised glass aquarium beneath a pagoda-style roof. Water flows down two waterfalls into the pond, then a hidden submersible pump sends it through a built-in biological filter and back around the system.

GreenBoma installs this design for homes and business grounds where there is room for a pond and a clear view of the fish and waterfalls. The listed price starts at KES 150,000 per project. We begin every quote with a free site visit, then confirm the design, scope and price for your property.

What does the two-tier koi pond include?

The lower level is a viewing pond designed for koi or goldfish. It has a curved, wood-textured concrete border, with an integrated planter box along the upper rim for microgreens. Above it sits a small glass aquarium under a pagoda-style roof.

Two waterfalls connect the upper tank to the main pond. A concealed submersible pump circulates the water through the built-in biological filtration chamber. The design brings the fish, moving water and planting together in one garden feature.

This installation has more built elements than a single-level pond: a raised glass tank, pagoda-style roof and two waterfalls. If you want moving water without an upper aquarium, compare it with our water feature installation service. We can also plan the feature as part of a wider bespoke garden design.

Is this pond right for your garden?

It can suit a home or business with enough space for the pond, safe working access and a suitable foundation. It is a good option if you want visible fish and a layered feature that can be seen from the garden.

It may not suit a very small garden or someone looking for a low-maintenance feature without fish. A simpler water feature may be a better fit in those cases. We discuss the options at the site visit and prepare a design for your approval before work starts.

The foundation and access matter. The site needs a level, load-bearing foundation rated for 600 kg to 1,200+ kg. Plan for a clear 1.2-metre delivery path and 1 metre of working space around the installation area.

How we install a two-tier koi pond

1. Free site visit: We look at the proposed location, access and available services, and discuss how you want to use the feature.
2. Design and quotation: We prepare a design for your approval and quote the agreed scope. The design sets out the pond and aquarium arrangement, border, planter and waterfall positions.
3. Installation: We build the cement pond and supporting features, fit the glass aquarium and pagoda-style roof, then install the pump and biological filtration chamber. The planned installation period is five days on site. We confirm the schedule for your property after agreeing the design and scope.
4. Handover: We check that water flows from the upper tank down both waterfalls and back into the lower pond. We explain the installed system and the agreed care requirements.

What you need to provide for the installation

Before work starts, make sure the site can accommodate the equipment and working space. The installation requirements include:

• A level, load-bearing foundation rated for 600 kg to 1,200+ kg.
• A clear 1.2-metre path for delivery and 1 metre of working space around the site.
• A pressurised fresh-water tap within 15–20 metres, plus a nearby drain.
• An outdoor power outlet with RCD and surge protection within 2 metres of the filter chamber.
• A position away from harsh all-day sun and overhanging trees.

We check the site with you during the free visit. If any requirement needs attention, we can discuss it before you approve the quotation.

Price and installation time

The listed starting price is KES 150,000 per project. The final quotation depends on the agreed design and site requirements, so ask us to confirm what the price includes for your property.

Installation is planned for five days on site. We confirm the schedule once we have visited and agreed the design and scope.

Care after handover

The pump and filtration system need to remain in working order, and the pond and water need regular checks. The integrated microgreen planter also needs care. We explain the agreed care requirements at handover; ongoing maintenance has an additional cost.

For help with regular garden care, see our professional garden maintenance service. If you are planning other work around the pond, we can discuss garden lighting as part of the wider garden plan.

Frequently asked questions

Can the pond hold koi and goldfish?

The lower viewing pond is designed for koi and goldfish. We confirm the pond design and its requirements during planning.

Does water circulate between the two levels?

Yes. The hidden submersible pump sends water from the lower system back through the biological filtration chamber and up to the glass tank. From there, water flows down the two waterfalls into the pond.

How much does koi pond installation cost in Nairobi?

The listed starting price is KES 150,000 per project. Your final price depends on the approved design and site requirements. Every quote starts with a free site visit.

How long does installation take?

The installation is planned for five days on site. We confirm the schedule after the site visit and agreement on the design and scope.

Can you design the pond for my property?

Yes. We visit the site, discuss the proposed location and prepare a design for your approval before work begins. We work across Nairobi and nearby areas, including Karen, Runda, Kiambu and Syokimau.

To discuss a two-tier koi pond for your garden, request a free site visit.