The key to successful Koi Keeping is
creating a optimum environment for your
Koi. One of the key elements is proper
filtration.
The filter is of utmost importance in
keeping your Koi pond crystal-clear and
free of chemical pollutants. Our line of
filters are designed to meet a wide range of
needs, for both large and small ponds.
Mechanical Filtration: Refers to the
physical removal of debris from water by
materials that trap large and small particles.
Koi ponds traditionally use some form of
solids separation, either passive (vortex
chambers) or mechanical
(micron-screen/static K1 separators).
Biological Filtration: This is where your
pond filter provides a home for beneficial
bacteria to grow on special media. These
bacteria remove harmful pollutants from
pond water. Known as the "Biological Filter"
these beneficial bacteria convert

Poisonous compounds such as ammonia and nitrite, into less toxic nitrate. The end
by-product, nitrate, is used as a food source by aquatic plants. This continuous process is
called the nitrogen cycle.
It is important to think of your filtration in terms of a "system", where components are carefully
selected and matched to provide optimum performance, ease of maintenance, and cost
effectiveness (both initial and long term operating costs). These components must perform 3
basic functions;
Removal of waste products from the pond
Separation of solid waste
Conversion of soluble waste
Please feel free to contact Dr Grecos koi and supplies should you require any guidance with
your project.
Dr. Greco's Koi and Supplies P.O. Box 788 Mount Sinai, N.Y. 11766 631-902-5991 Koi viewed by Appointment only Located on Long Island in Suffolk County In the Township of Brookhaven
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We carry Koi, and Supplies, pond accessories, Koi ponds, water test kits, UV, koi medication,
koi pond pumps, koi pond filters, koi pond aeration, koi food, nets and bowls, auto feeders,
filter media, pond accessories, skimmers and drains
We have advice on Koi Diseases, koi medicine,koi foods, koi pond care, and koi feeding
Dr. Greco's Koi and Supplies show Koi only by appointment
We are located in New York State on Long Island in Mt. Sinai, Suffolk County
Please feel free to contact Dr Grecos koi and supplies should you require any guidance
with your project.