Publication list for Website Editor

An Engineering View of Recirculating Aquaculture & Aquaponics Systems

Courtesy of James Ebeling an introduction to some of the basics you should keep in mind RAS

Raise the flag: South African veterinarian develops three-tiered tilapia-health system

Effective biosecurity systems in tilapia farming will help ensure farmer success.

Biofilters: Wet

Wet biofilters have an important role to play.

Biofiltration: The Basics

The oxidation of reduced nitrogen (NH3) by bacteria is a natural process known as nitrification.

Solids Removal: Screens and Fractionators

Alternatives to granular media filters.

Solids Removal: Granular Media

Removing solids is an important part of keeping your RAS in good shape for your fish.

Solid Waste

Removal of solid waste in recirculation aquaculture is complicated by the fact that the loosely aggregated fecal material and uneaten food tend to break into small pieces in the water.

Tanks

Tanks for recirculation aquaculture have been made from a variety of materials.

Basic System Design

In a recirculation system, five functions must occur to provide life support for the fish.

Water

Water is, of course, the most important component of any aquaculture operation.

Water Quality: Ammonia

Ammonia exists in two species: un-ionized ammonia (NH3) and ionized ammonium (NH4+), the amount of each type depending on the pH and temperature of the water.

The interplay between the carbon-based life on earth with the physical biosphere results in the profoundly important carbon cycle, which is responsible for everything from the earth's food supply to free oxygen in the atmosphere to global warming.

Water Quality: Gases

Air is a mixture of gases (about 80% nitrogen, 20% oxygen, and 0.035% of carbon dioxide).

Red spot disease confirmed in Hartbeespoort Dam

The faculty of veterinary sciences of the University of Pretoria has identified Epizootic Ulcerative Syndrome (EUS), or red spot disease in fish in the Hartbeespoort Dam after fishermen reported ulcers and red spots on fish, as well as abnormal mortalitie

Understanding How Fish Breathe

In order to successfully design and operate a life support system for fish, one must have a basic understanding of the physiological requirements of fish.

Accelerating the Green Development of Aquaculture in China

China set to revolutionise its aquaculture industry towards a 'greener' and technological driven industry.

MANAGING YOUR FISH HEALTH - Parasite check of tilapia (Oreochromis spp.) using your microscope

It is well known that a healthy fish will carry some parasites as commensals, without any serious damage being inflicted upon the host fish. However, when the host fish is challenged by additional “stressors” (poor water quality, other disease, poor nutri

Risks Associated with Using Methyl Testosterone in Tilapia Farming

Despite widespread use of the androgen 17?-Methyl Testosterone (MT) in tilapia farming,the implications of tilapia hormone treatment in relation to human health and the environment have not been well articulated to the fish trade, or the general public.

Water Reuse in Incubation Systems (Part II)

This is the second of a two-part series on implementation of water reuse technologies in the design of incubation systems.

5 Things to Watch Out for Before You Buy Those Fingerlings!

One of the factors that determine the success or failure of any fish farm is the quality of fish that is reared on the farm.

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Hatchery Principles and Practices

Advantage and disadvantages of various RAS systems

Water Quality: Buffering

Tilapia lake virus - Important Information

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Risks Associated with Using Methyl Testosterone in Tilapia Farming

IoT and ERP Combine for Improved Food Traceability

Ghana Tilapia Video

Confirmed TiLV outbreaks as of August 2018

Glossary of Aquaculture Terms

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