Okeanos Group designs, installs, and maintains custom reef aquariums across the tri-state area, serving NYC, Westchester, Long Island, the Hamptons, New Jersey, southern Connecticut, and the broader region. Reef aquariums are the most technically demanding category of custom aquarium work and represent a significant share of the firm's residential and commercial installations. The firm has installed reef systems continuously since 2002 from its Chelsea atelier at 521 West 26th Street in NYC.
What makes a reef tank installation different
A reef aquarium is not a fish tank with coral added. Reef systems are closed biological environments where coral, fish, and invertebrates depend on precisely controlled water chemistry, lighting, flow, and biological filtration. The technical scope is substantially greater than a freshwater or fish-only saltwater installation:
- Water chemistry must be maintained within tight parameters for calcium, alkalinity, magnesium, and trace elements
- Lighting must match the spectral and intensity profile required for photosynthetic coral
- Water flow must replicate the patterns coral receives in the wild
- Biological filtration relies on living bacteria and microfauna that take months to establish
- Coral acclimation and placement is a months-long process
Okeanos's reef installations are engineered as full systems, with the tank itself representing only a portion of the technical scope. The life-support cabinetry behind the tank (sump, skimmer, calcium reactor, dosing systems, return pumps, controllers) is typically as large as the tank itself and requires dedicated equipment space.
Reef tank installation process
A typical Okeanos reef installation runs in phases over six to twelve months:
- Months 1–2: Design, rendering, and engineering. Tank design, life-support engineering, equipment selection, integration documentation.
- Months 2–4: Custom fabrication. The tank, cabinetry, and life-support components are built in the firm's facility.
- Month 4: Physical installation. Tank delivery, placement, plumbing and electrical integration, initial water-up.
- Months 4–6: Biological establishment. The system cycles biologically for six to eight weeks before livestock is introduced.
- Months 6–12: Livestock acclimation. Fish are introduced first, then coral over a multi-month schedule that allows each addition to acclimate before the next.
Service area for reef installations
Okeanos installs reef systems across the tri-state area: all five NYC boroughs, Westchester County, Long Island including the Hamptons, northern and central New Jersey, southern Connecticut including Greenwich and Fairfield County, and the Hudson Valley. Major projects elsewhere in the country and internationally are considered case-by-case.
Pricing for reef installations
Custom reef installations range from $50,000 for a 200-gallon system in a residential context to over $2,000,000 for museum-scale and architecturally integrated installations. Mid-range residential reef projects (500 to 1,500 gallons) typically fall in the $150,000 to $500,000 range.
Ongoing reef maintenance is critical. Reef systems require weekly hands-on care, water chemistry monitoring, equipment servicing, and coral husbandry. Monthly maintenance contracts for reef systems typically run $1,500 to $10,000 depending on system complexity and the level of service the client contracts for.
Frequently asked questions
How long does it take to fully stock a reef tank? Six to twelve months from initial water-up. Livestock is introduced gradually to allow the biological system to absorb each addition. Rushing this process commonly causes system failure.
Can I have a reef tank if I travel frequently? Yes, but it requires a robust maintenance contract. Reef systems cannot be left unattended for more than a few days without skilled monitoring. Okeanos's maintenance contracts include the ongoing care that makes reef ownership viable for frequently absent owners.
What's the difference between a fish-only saltwater tank and a reef tank? A fish-only saltwater tank holds saltwater fish without live coral. The technical demands are substantially lower than a reef tank because there's no need to maintain precise water chemistry for coral. A reef tank holds living coral and invertebrates and requires the full life-support engineering described above.
Do you provide coral and livestock as part of the installation? Yes. Coral and livestock selection, sourcing, acclimation, and placement are part of the standard reef installation scope. The firm sources coral and fish through established supply relationships and acclimates all livestock in the firm's facility before placement in the client's system.